첫 번째 과제(202AIE10 김현정)

2020년 9월 27일

교수님께서 말씀하신 대로 구글 검색과 강의 자료의 도움을 받아 과제를 완성했습니다. 재미있기도 하고 하나씩 해내는 기분이 좋았어요. 그런데 왜 이 코드를 넣는지 잘 모르고 따라 한 것들도 있어서, 조금은 개운하지 못한 기분도 드는 것이 사실입니다. 앞으로 더 배우면 알게 되겠죠? 어찌 됐건 이렇게까지 할 수 있도록 하나씩 차근차근 알려주셔서 감사합니다.

<1번>

library(ggplot2)
mpg
## # A tibble: 234 x 11
##    manufacturer model    displ  year   cyl trans   drv     cty   hwy fl    class
##    <chr>        <chr>    <dbl> <int> <int> <chr>   <chr> <int> <int> <chr> <chr>
##  1 audi         a4         1.8  1999     4 auto(l… f        18    29 p     comp…
##  2 audi         a4         1.8  1999     4 manual… f        21    29 p     comp…
##  3 audi         a4         2    2008     4 manual… f        20    31 p     comp…
##  4 audi         a4         2    2008     4 auto(a… f        21    30 p     comp…
##  5 audi         a4         2.8  1999     6 auto(l… f        16    26 p     comp…
##  6 audi         a4         2.8  1999     6 manual… f        18    26 p     comp…
##  7 audi         a4         3.1  2008     6 auto(a… f        18    27 p     comp…
##  8 audi         a4 quat…   1.8  1999     4 manual… 4        18    26 p     comp…
##  9 audi         a4 quat…   1.8  1999     4 auto(l… 4        16    25 p     comp…
## 10 audi         a4 quat…   2    2008     4 manual… 4        20    28 p     comp…
## # … with 224 more rows
ggplot(data=mpg, aes(x=hwy)) +geom_histogram(aes(fill=drv), alpha=0.5) +
  labs(title="Histogram", subtitle="Histogram of Highway Mile Per Gallon", 
  caption="Source:mpg") +theme_minimal()
## `stat_bin()` using `bins = 30`. Pick better value with `binwidth`.

<2번>

ggplot(data=mpg, aes(x=hwy)) +geom_histogram(aes(fill=drv), alpha=0.5)+
  labs(title="Histogram using facet_grid()", subtitle="Histogram of Highway Mile Per Gallon", 
  caption="Source:mpg") + facet_grid(rows=vars(drv)) +theme_minimal()
## `stat_bin()` using `bins = 30`. Pick better value with `binwidth`.

<3번>

library(ggplot2)
midwest
## # A tibble: 437 x 28
##      PID county state  area poptotal popdensity popwhite popblack popamerindian
##    <int> <chr>  <chr> <dbl>    <int>      <dbl>    <int>    <int>         <int>
##  1   561 ADAMS  IL    0.052    66090      1271.    63917     1702            98
##  2   562 ALEXA… IL    0.014    10626       759      7054     3496            19
##  3   563 BOND   IL    0.022    14991       681.    14477      429            35
##  4   564 BOONE  IL    0.017    30806      1812.    29344      127            46
##  5   565 BROWN  IL    0.018     5836       324.     5264      547            14
##  6   566 BUREAU IL    0.05     35688       714.    35157       50            65
##  7   567 CALHO… IL    0.017     5322       313.     5298        1             8
##  8   568 CARRO… IL    0.027    16805       622.    16519      111            30
##  9   569 CASS   IL    0.024    13437       560.    13384       16             8
## 10   570 CHAMP… IL    0.058   173025      2983.   146506    16559           331
## # … with 427 more rows, and 19 more variables: popasian <int>, popother <int>,
## #   percwhite <dbl>, percblack <dbl>, percamerindan <dbl>, percasian <dbl>,
## #   percother <dbl>, popadults <int>, perchsd <dbl>, percollege <dbl>,
## #   percprof <dbl>, poppovertyknown <int>, percpovertyknown <dbl>,
## #   percbelowpoverty <dbl>, percchildbelowpovert <dbl>, percadultpoverty <dbl>,
## #   percelderlypoverty <dbl>, inmetro <int>, category <chr>
options(scipen=999)
ggplot(data=midwest, aes(x=area, y=poptotal))+geom_point(aes(color=state, size=popdensity), alpha=0.4) +xlim(0, 0.1) +ylim(0, 500000)+ theme_classic()+
   labs(title="Scatterplot", subtitle="Area Vs Population", 
  caption="Source:midwest", x="Area", y="Population") +geom_smooth(se=FALSE) 
## `geom_smooth()` using method = 'loess' and formula 'y ~ x'

<4번>

iris
##     Sepal.Length Sepal.Width Petal.Length Petal.Width    Species
## 1            5.1         3.5          1.4         0.2     setosa
## 2            4.9         3.0          1.4         0.2     setosa
## 3            4.7         3.2          1.3         0.2     setosa
## 4            4.6         3.1          1.5         0.2     setosa
## 5            5.0         3.6          1.4         0.2     setosa
## 6            5.4         3.9          1.7         0.4     setosa
## 7            4.6         3.4          1.4         0.3     setosa
## 8            5.0         3.4          1.5         0.2     setosa
## 9            4.4         2.9          1.4         0.2     setosa
## 10           4.9         3.1          1.5         0.1     setosa
## 11           5.4         3.7          1.5         0.2     setosa
## 12           4.8         3.4          1.6         0.2     setosa
## 13           4.8         3.0          1.4         0.1     setosa
## 14           4.3         3.0          1.1         0.1     setosa
## 15           5.8         4.0          1.2         0.2     setosa
## 16           5.7         4.4          1.5         0.4     setosa
## 17           5.4         3.9          1.3         0.4     setosa
## 18           5.1         3.5          1.4         0.3     setosa
## 19           5.7         3.8          1.7         0.3     setosa
## 20           5.1         3.8          1.5         0.3     setosa
## 21           5.4         3.4          1.7         0.2     setosa
## 22           5.1         3.7          1.5         0.4     setosa
## 23           4.6         3.6          1.0         0.2     setosa
## 24           5.1         3.3          1.7         0.5     setosa
## 25           4.8         3.4          1.9         0.2     setosa
## 26           5.0         3.0          1.6         0.2     setosa
## 27           5.0         3.4          1.6         0.4     setosa
## 28           5.2         3.5          1.5         0.2     setosa
## 29           5.2         3.4          1.4         0.2     setosa
## 30           4.7         3.2          1.6         0.2     setosa
## 31           4.8         3.1          1.6         0.2     setosa
## 32           5.4         3.4          1.5         0.4     setosa
## 33           5.2         4.1          1.5         0.1     setosa
## 34           5.5         4.2          1.4         0.2     setosa
## 35           4.9         3.1          1.5         0.2     setosa
## 36           5.0         3.2          1.2         0.2     setosa
## 37           5.5         3.5          1.3         0.2     setosa
## 38           4.9         3.6          1.4         0.1     setosa
## 39           4.4         3.0          1.3         0.2     setosa
## 40           5.1         3.4          1.5         0.2     setosa
## 41           5.0         3.5          1.3         0.3     setosa
## 42           4.5         2.3          1.3         0.3     setosa
## 43           4.4         3.2          1.3         0.2     setosa
## 44           5.0         3.5          1.6         0.6     setosa
## 45           5.1         3.8          1.9         0.4     setosa
## 46           4.8         3.0          1.4         0.3     setosa
## 47           5.1         3.8          1.6         0.2     setosa
## 48           4.6         3.2          1.4         0.2     setosa
## 49           5.3         3.7          1.5         0.2     setosa
## 50           5.0         3.3          1.4         0.2     setosa
## 51           7.0         3.2          4.7         1.4 versicolor
## 52           6.4         3.2          4.5         1.5 versicolor
## 53           6.9         3.1          4.9         1.5 versicolor
## 54           5.5         2.3          4.0         1.3 versicolor
## 55           6.5         2.8          4.6         1.5 versicolor
## 56           5.7         2.8          4.5         1.3 versicolor
## 57           6.3         3.3          4.7         1.6 versicolor
## 58           4.9         2.4          3.3         1.0 versicolor
## 59           6.6         2.9          4.6         1.3 versicolor
## 60           5.2         2.7          3.9         1.4 versicolor
## 61           5.0         2.0          3.5         1.0 versicolor
## 62           5.9         3.0          4.2         1.5 versicolor
## 63           6.0         2.2          4.0         1.0 versicolor
## 64           6.1         2.9          4.7         1.4 versicolor
## 65           5.6         2.9          3.6         1.3 versicolor
## 66           6.7         3.1          4.4         1.4 versicolor
## 67           5.6         3.0          4.5         1.5 versicolor
## 68           5.8         2.7          4.1         1.0 versicolor
## 69           6.2         2.2          4.5         1.5 versicolor
## 70           5.6         2.5          3.9         1.1 versicolor
## 71           5.9         3.2          4.8         1.8 versicolor
## 72           6.1         2.8          4.0         1.3 versicolor
## 73           6.3         2.5          4.9         1.5 versicolor
## 74           6.1         2.8          4.7         1.2 versicolor
## 75           6.4         2.9          4.3         1.3 versicolor
## 76           6.6         3.0          4.4         1.4 versicolor
## 77           6.8         2.8          4.8         1.4 versicolor
## 78           6.7         3.0          5.0         1.7 versicolor
## 79           6.0         2.9          4.5         1.5 versicolor
## 80           5.7         2.6          3.5         1.0 versicolor
## 81           5.5         2.4          3.8         1.1 versicolor
## 82           5.5         2.4          3.7         1.0 versicolor
## 83           5.8         2.7          3.9         1.2 versicolor
## 84           6.0         2.7          5.1         1.6 versicolor
## 85           5.4         3.0          4.5         1.5 versicolor
## 86           6.0         3.4          4.5         1.6 versicolor
## 87           6.7         3.1          4.7         1.5 versicolor
## 88           6.3         2.3          4.4         1.3 versicolor
## 89           5.6         3.0          4.1         1.3 versicolor
## 90           5.5         2.5          4.0         1.3 versicolor
## 91           5.5         2.6          4.4         1.2 versicolor
## 92           6.1         3.0          4.6         1.4 versicolor
## 93           5.8         2.6          4.0         1.2 versicolor
## 94           5.0         2.3          3.3         1.0 versicolor
## 95           5.6         2.7          4.2         1.3 versicolor
## 96           5.7         3.0          4.2         1.2 versicolor
## 97           5.7         2.9          4.2         1.3 versicolor
## 98           6.2         2.9          4.3         1.3 versicolor
## 99           5.1         2.5          3.0         1.1 versicolor
## 100          5.7         2.8          4.1         1.3 versicolor
## 101          6.3         3.3          6.0         2.5  virginica
## 102          5.8         2.7          5.1         1.9  virginica
## 103          7.1         3.0          5.9         2.1  virginica
## 104          6.3         2.9          5.6         1.8  virginica
## 105          6.5         3.0          5.8         2.2  virginica
## 106          7.6         3.0          6.6         2.1  virginica
## 107          4.9         2.5          4.5         1.7  virginica
## 108          7.3         2.9          6.3         1.8  virginica
## 109          6.7         2.5          5.8         1.8  virginica
## 110          7.2         3.6          6.1         2.5  virginica
## 111          6.5         3.2          5.1         2.0  virginica
## 112          6.4         2.7          5.3         1.9  virginica
## 113          6.8         3.0          5.5         2.1  virginica
## 114          5.7         2.5          5.0         2.0  virginica
## 115          5.8         2.8          5.1         2.4  virginica
## 116          6.4         3.2          5.3         2.3  virginica
## 117          6.5         3.0          5.5         1.8  virginica
## 118          7.7         3.8          6.7         2.2  virginica
## 119          7.7         2.6          6.9         2.3  virginica
## 120          6.0         2.2          5.0         1.5  virginica
## 121          6.9         3.2          5.7         2.3  virginica
## 122          5.6         2.8          4.9         2.0  virginica
## 123          7.7         2.8          6.7         2.0  virginica
## 124          6.3         2.7          4.9         1.8  virginica
## 125          6.7         3.3          5.7         2.1  virginica
## 126          7.2         3.2          6.0         1.8  virginica
## 127          6.2         2.8          4.8         1.8  virginica
## 128          6.1         3.0          4.9         1.8  virginica
## 129          6.4         2.8          5.6         2.1  virginica
## 130          7.2         3.0          5.8         1.6  virginica
## 131          7.4         2.8          6.1         1.9  virginica
## 132          7.9         3.8          6.4         2.0  virginica
## 133          6.4         2.8          5.6         2.2  virginica
## 134          6.3         2.8          5.1         1.5  virginica
## 135          6.1         2.6          5.6         1.4  virginica
## 136          7.7         3.0          6.1         2.3  virginica
## 137          6.3         3.4          5.6         2.4  virginica
## 138          6.4         3.1          5.5         1.8  virginica
## 139          6.0         3.0          4.8         1.8  virginica
## 140          6.9         3.1          5.4         2.1  virginica
## 141          6.7         3.1          5.6         2.4  virginica
## 142          6.9         3.1          5.1         2.3  virginica
## 143          5.8         2.7          5.1         1.9  virginica
## 144          6.8         3.2          5.9         2.3  virginica
## 145          6.7         3.3          5.7         2.5  virginica
## 146          6.7         3.0          5.2         2.3  virginica
## 147          6.3         2.5          5.0         1.9  virginica
## 148          6.5         3.0          5.2         2.0  virginica
## 149          6.2         3.4          5.4         2.3  virginica
## 150          5.9         3.0          5.1         1.8  virginica
ggplot(data=iris, aes(x=Sepal.Length, y=Sepal.Width))+geom_point(aes(color=Species, shape=Species), size=6, alpha=0.5) +labs(title="Scatterplot", subtitle="Sepal.Length Vs Sepal.Width", 
  caption="Source:iris") +theme_minimal()

<5번>

library(gcookbook)
heightweight
##     sex ageYear ageMonth heightIn weightLb
## 1     f   11.92      143     56.3     85.0
## 2     f   12.92      155     62.3    105.0
## 3     f   12.75      153     63.3    108.0
## 4     f   13.42      161     59.0     92.0
## 5     f   15.92      191     62.5    112.5
## 6     f   14.25      171     62.5    112.0
## 7     f   15.42      185     59.0    104.0
## 8     f   11.83      142     56.5     69.0
## 9     f   13.33      160     62.0     94.5
## 10    f   11.67      140     53.8     68.5
## 11    f   11.58      139     61.5    104.0
## 12    f   14.83      178     61.5    103.5
## 13    f   13.08      157     64.5    123.5
## 14    f   12.42      149     58.3     93.0
## 15    f   11.92      143     51.3     50.5
## 16    f   12.08      145     58.8     89.0
## 17    f   15.92      191     65.3    107.0
## 18    f   12.50      150     59.5     78.5
## 19    f   12.25      147     61.3    115.0
## 20    f   15.00      180     63.3    114.0
## 21    f   11.75      141     61.8     85.0
## 22    f   11.67      140     53.5     81.0
## 23    f   13.67      164     58.0     83.5
## 24    f   14.67      176     61.3    112.0
## 25    f   15.42      185     63.3    101.0
## 26    f   13.83      166     61.5    103.5
## 27    f   14.58      175     60.8     93.5
## 28    f   15.00      180     59.0    112.0
## 29    f   17.50      210     65.5    140.0
## 30    f   12.17      146     56.3     83.5
## 31    f   14.17      170     64.3     90.0
## 32    f   13.50      162     58.0     84.0
## 33    f   12.42      149     64.3    110.5
## 34    f   11.58      139     57.5     96.0
## 35    f   15.50      186     57.8     95.0
## 36    f   16.42      197     61.5    121.0
## 37    f   14.08      169     62.3     99.5
## 38    f   14.75      177     61.8    142.5
## 39    f   15.42      185     65.3    118.0
## 40    f   15.17      182     58.3    104.5
## 41    f   14.42      173     62.8    102.5
## 42    f   13.83      166     59.3     89.5
## 43    f   14.00      168     61.5     95.0
## 44    f   14.08      169     62.0     98.5
## 45    f   12.50      150     61.3     94.0
## 46    f   15.33      184     62.3    108.0
## 47    f   11.58      139     52.8     63.5
## 48    f   12.25      147     59.8     84.5
## 49    f   12.00      144     59.5     93.5
## 50    f   14.75      177     61.3    112.0
## 51    f   14.83      178     63.5    148.5
## 52    f   16.42      197     64.8    112.0
## 53    f   12.17      146     60.0    109.0
## 54    f   12.08      145     59.0     91.5
## 55    f   12.25      147     55.8     75.0
## 56    f   12.08      145     57.8     84.0
## 57    f   12.92      155     61.3    107.0
## 58    f   13.92      167     62.3     92.5
## 59    f   15.25      183     64.3    109.5
## 60    f   11.92      143     55.5     84.0
## 61    f   15.25      183     64.5    102.5
## 62    f   15.42      185     60.0    106.0
## 63    f   12.33      148     56.3     77.0
## 64    f   12.25      147     58.3    111.5
## 65    f   12.83      154     60.0    114.0
## 66    f   13.00      156     54.5     75.0
## 67    f   12.00      144     55.8     73.5
## 68    f   12.83      154     62.8     93.5
## 69    f   12.67      152     60.5    105.0
## 70    f   15.92      191     63.3    113.5
## 71    f   15.83      190     66.8    140.0
## 72    f   11.67      140     60.0     77.0
## 73    f   12.33      148     60.5     84.5
## 74    f   15.75      189     64.3    113.5
## 75    f   11.92      143     58.3     77.5
## 76    f   14.83      178     66.5    117.5
## 77    f   13.67      164     65.3     98.0
## 78    f   13.08      157     60.5    112.0
## 79    f   12.25      147     59.5    101.0
## 80    f   12.33      148     59.0     95.0
## 81    f   14.75      177     61.3     81.0
## 82    f   14.25      171     61.5     91.0
## 83    f   14.33      172     64.8    142.0
## 84    f   15.83      190     56.8     98.5
## 85    f   15.25      183     66.5    112.0
## 86    f   11.92      143     61.5    116.5
## 87    f   14.92      179     63.0     98.5
## 88    f   15.50      186     57.0     83.5
## 89    f   15.17      182     65.5    133.0
## 90    f   15.17      182     62.0     91.5
## 91    f   11.83      142     56.0     72.5
## 92    f   13.75      165     61.3    106.5
## 93    f   13.75      165     55.5     67.0
## 94    f   12.83      154     61.0    122.5
## 95    f   12.50      150     54.5     74.0
## 96    f   12.92      155     66.0    144.5
## 97    f   13.58      163     56.5     84.0
## 98    f   11.75      141     56.0     72.5
## 99    f   12.25      147     51.5     64.0
## 100   f   17.50      210     62.0    116.0
## 101   f   14.25      171     63.0     84.0
## 102   f   13.92      167     61.0     93.5
## 103   f   15.17      182     64.0    111.5
## 104   f   12.00      144     61.0     92.0
## 105   f   16.08      193     59.8    115.0
## 106   f   11.75      141     61.3     85.0
## 107   f   13.67      164     63.3    108.0
## 108   f   15.50      186     63.5    108.0
## 109   f   14.08      169     61.5     85.0
## 110   f   14.58      175     60.3     86.0
## 111   f   15.00      180     61.3    110.5
## 112   m   13.75      165     64.8     98.0
## 113   m   13.08      157     60.5    105.0
## 114   m   12.00      144     57.3     76.5
## 115   m   12.50      150     59.5     84.0
## 116   m   12.50      150     60.8    128.0
## 117   m   11.58      139     60.5     87.0
## 118   m   15.75      189     67.0    128.0
## 119   m   15.25      183     64.8    111.0
## 120   m   12.25      147     50.5     79.0
## 121   m   12.17      146     57.5     90.0
## 122   m   13.33      160     60.5     84.0
## 123   m   13.00      156     61.8    112.0
## 124   m   14.42      173     61.3     93.0
## 125   m   12.58      151     66.3    117.0
## 126   m   11.75      141     53.3     84.0
## 127   m   12.50      150     59.0     99.5
## 128   m   13.67      164     57.8     95.0
## 129   m   12.75      153     60.0     84.0
## 130   m   17.17      206     68.3    134.0
## 132   m   14.67      176     63.8     98.5
## 133   m   14.67      176     65.0    118.5
## 134   m   11.67      140     59.5     94.5
## 135   m   15.42      185     66.0    105.0
## 136   m   15.00      180     61.8    104.0
## 137   m   12.17      146     57.3     83.0
## 138   m   15.25      183     66.0    105.5
## 139   m   11.67      140     56.5     84.0
## 140   m   12.58      151     58.3     86.0
## 141   m   12.58      151     61.0     81.0
## 142   m   12.00      144     62.8     94.0
## 143   m   13.33      160     59.3     78.5
## 144   m   14.83      178     67.3    119.5
## 145   m   16.08      193     66.3    133.0
## 146   m   13.50      162     64.5    119.0
## 147   m   13.67      164     60.5     95.0
## 148   m   15.50      186     66.0    112.0
## 149   m   11.92      143     57.5     75.0
## 150   m   14.58      175     64.0     92.0
## 151   m   14.58      175     68.0    112.0
## 152   m   14.58      175     63.5     98.5
## 153   m   14.42      173     69.0    112.5
## 154   m   14.17      170     63.8    112.5
## 155   m   14.50      174     66.0    108.0
## 156   m   13.67      164     63.5    108.0
## 157   m   12.00      144     59.5     88.0
## 158   m   13.00      156     66.3    106.0
## 159   m   12.42      149     57.0     92.0
## 160   m   12.00      144     60.0    117.5
## 161   m   12.25      147     57.0     84.0
## 162   m   15.67      188     67.3    112.0
## 163   m   14.08      169     62.0    100.0
## 164   m   14.33      172     65.0    112.0
## 165   m   12.50      150     59.5     84.0
## 166   m   16.08      193     67.8    127.5
## 167   m   13.08      157     58.0     80.5
## 168   m   14.00      168     60.0     93.5
## 169   m   11.67      140     58.5     86.5
## 170   m   13.00      156     58.3     92.5
## 171   m   13.00      156     61.5    108.5
## 172   m   13.17      158     65.0    121.0
## 173   m   15.33      184     66.5    112.0
## 174   m   13.00      156     68.5    114.0
## 175   m   12.00      144     57.0     84.0
## 176   m   14.67      176     61.5     81.0
## 177   m   14.00      168     66.5    111.5
## 178   m   12.42      149     52.5     81.0
## 179   m   11.83      142     55.0     70.0
## 180   m   15.67      188     71.0    140.0
## 181   m   16.92      203     66.5    117.0
## 182   m   11.83      142     58.8     84.0
## 183   m   15.75      189     66.3    112.0
## 184   m   15.67      188     65.8    150.5
## 185   m   16.67      200     71.0    147.0
## 186   m   12.67      152     59.5    105.0
## 187   m   14.50      174     69.8    119.5
## 188   m   13.83      166     62.5     84.0
## 189   m   12.08      145     56.5     91.0
## 190   m   11.92      143     57.5    101.0
## 191   m   13.58      163     65.3    117.5
## 192   m   13.83      166     67.3    121.0
## 193   m   15.17      182     67.0    133.0
## 194   m   14.42      173     66.0    112.0
## 195   m   12.92      155     61.8     91.5
## 196   m   13.50      162     60.0    105.0
## 197   m   14.75      177     63.0    111.0
## 198   m   14.75      177     60.5    112.0
## 199   m   14.58      175     65.5    114.0
## 200   m   13.83      166     62.0     91.0
## 201   m   12.50      150     59.0     98.0
## 202   m   12.50      150     61.8    118.0
## 203   m   15.67      188     63.3    115.5
## 204   m   13.58      163     66.0    112.0
## 205   m   14.25      171     61.8    112.0
## 206   m   13.50      162     63.0     91.0
## 207   m   11.75      141     57.5     85.0
## 208   m   14.50      174     63.0    112.0
## 209   m   11.83      142     56.0     87.5
## 210   m   12.33      148     60.5    118.0
## 211   m   11.67      140     56.8     83.5
## 212   m   13.33      160     64.0    116.0
## 213   m   12.00      144     60.0     89.0
## 214   m   17.17      206     69.5    171.5
## 215   m   13.25      159     63.3    112.0
## 216   m   12.42      149     56.3     72.0
## 217   m   16.08      193     72.0    150.0
## 218   m   16.17      194     65.3    134.5
## 219   m   12.67      152     60.8     97.0
## 220   m   12.17      146     55.0     71.5
## 221   m   11.58      139     55.0     73.5
## 222   m   15.50      186     66.5    112.0
## 223   m   13.42      161     56.8     75.0
## 224   m   12.75      153     64.8    128.0
## 225   m   16.33      196     64.5     98.0
## 226   m   13.67      164     58.0     84.0
## 227   m   13.25      159     62.8     99.0
## 228   m   14.83      178     63.8    112.0
## 229   m   12.75      153     57.8     79.5
## 230   m   12.92      155     57.3     80.5
## 231   m   14.83      178     63.5    102.5
## 232   m   11.83      142     55.0     76.0
## 233   m   13.67      164     66.5    112.0
## 234   m   15.75      189     65.0    114.0
## 235   m   13.67      164     61.5    140.0
## 236   m   13.92      167     62.0    107.5
## 237   m   12.58      151     59.3     87.0
ggplot(data=heightweight, aes(x=heightIn, y=weightLb, color=sex))+geom_point(aes(color=sex), size=3, alpha=0.5) +
  geom_smooth(method = "lm", se=FALSE) +
  labs(title = "Scatterplot", subtitle = "Weight Vs Height", caption = "Source:heightweight") + theme_classic()
## `geom_smooth()` using formula 'y ~ x'

<6번>

library(RColorBrewer)
ggplot(data=mpg, aes(x=manufacturer, fill=class)) + geom_bar(width = 0.5) +
  scale_fill_brewer(palette = "Spectral") + theme_minimal() + 
  theme(axis.text.x=element_text(angle = 65, hjust=0.5, vjust=0.5)) +
  labs(title = "Barplot", subtitle = "Manufacturer across Vehicle Classes")