This document appears to be a presentation on using the statistical programming language R. The presentation covers downloading and installing R, basic functions and commands in R like reading data files and performing calculations, data visualization techniques using R like histograms and scatter plots, performing statistical tests like t-tests, and introducing packages that can be used with R like RMeCab for natural language processing. The presentation encourages participants to ask questions and provides contact information for the presenter.

1. 40
SAKAUE Akkuş Tatsuya
2011-12-17
Tuesday, December 6, 11 1

2. Agenda
1. R
2.
3.
4.
5. R
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3. Agenda
1. R
2.
3.
4.
5. R
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4. •
• Ross Ihaka & Robert Gentleman (R & R)
• Ross Ihaka and Robert Gentleman. R: A language for data analysis and graphics.
Journal of Computational and Graphical Statistics, 5(3):299-314, 1996.
• http://biostat.mc.vanderbilt.edu/twiki/pub/Main/Je reyHorner/JCGSR.pdf
•
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5. Tuesday, December 6, 11 10

6. • IBM SPSS Statistics 10 ...
•
•
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7. Excel SPSS ...
•
•
• Excel
•
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8. -Install / Update / Uninstall-
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9. 1. http://www.r-project.org/
2. “download R”
3. JAPAN
4. OS
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10. • Windows: : http://cran.md.tsukuba.ac.jp/bin/windows/base/
• Download R 2.14.0 for Windows
• Mac OS X: http://cran.md.tsukuba.ac.jp/bin/macosx/
• R-2.14.0.pkg (latest version)
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11. Tuesday, December 6, 11 17

12. Tuesday, December 6, 11 18

13. Tuesday, December 6, 11 19

14. Tuesday, December 6, 11 20

15. Tuesday, December 6, 11 21

16. Tuesday, December 6, 11 22

17. 1. http://www.r-project.org/
2.
3.
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18. •
•
• Windows
•
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19. • Windows
• [ Windows XP] →
• [ Windows 7 ] →
• Mac OS X
• /Applications /Library
Frameworks R. framework CleanApp
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20. • Windows
• START → Program → R → R 2.14.0
• Mac OS X
• /Applications R
R
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21. • Windows Mac OS X
1. q()
2.
3. R
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22. ...
• help(sth)
• seekR (http://seekr.jp/)
• R SEEK (http://www.rseek.org/)
• RjpWiki (http://www.okada.jp.org/RWiki/)
• R-Tips (http://cse.naro.a rc.go.jp/takezawa/r-tips/r.html)
•R (http://aoki2.si.gunma-u.ac.jp/R/)
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23. •
•
• help(sth) !!
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24. Agenda
1. R
2.
3.
4.
5. R
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25. Agenda
1. R
2.
3.
4.
5. R
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26. Tuesday, December 6, 11 33

27. • [Enter]
• > 3+5 [Enter]
• > 10-3 [Enter]
• > 2*3 [Enter]
• > 100/20 [Enter]
• > (12 + 34 -56) * 78 / 90 [Enter]
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28. Tuesday, December 6, 11 35

29. Tuesday, December 6, 11 36

30. “I don't know !” by fmgbain http://www.flickr.com/photos/fmgbain/4382010455/
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31. Tuesday, December 6, 11 38

32. sqrt()
• > sqrt(2)
• > sqrt(144)
• > sqrt(104976)
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33. ( )
•
•q() help(sth)
•
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34. Tuesday, December 6, 11 41

35. Tuesday, December 6, 11 42

36. Tuesday, December 6, 11 43

37. Tuesday, December 6, 11 44

38. “I don't know !” by fmgbain http://www.flickr.com/photos/fmgbain/4382010455/
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39. Tuesday, December 6, 11 46

40. “hako”
• > hako <- c(1,2,3,4,5)
• > hako
• c() concatenate/combine
•
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41. c() “<-”
hako <- c(1,2,3,4,5) “<-”
←
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42. + ...
• [Enter]
• [STOP]
• [Esc]
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43. •
• Tab
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44. hako
1 5 5
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45. Tuesday, December 6, 11 52

46. • > sqrt(hako)
• > log(hako)
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47. sqrt(1), sqrt(2) ... sqrt(5)
log(1), log (2) ... log (5)
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48. Tuesday, December 6, 11 55

49. •R
•
• q(), help(), sqrt(), log(), c()
•
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50. Agenda
1. R
2.
3.
4.
5. R
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51. Agenda
1. R
2.
3.
4.
5. R
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52. Tuesday, December 6, 11 59

53. Tuesday, December 6, 11 60

54. Tuesday, December 6, 11 61

55. ...
•
•
• TOEIC
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56. ...
A 180 75
B 170 65
C 165 60
D 175 70
E 190 80
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57. ...
• Excel
•
→
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58. • ...
•
•
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59. • Windows →
• “MyDocuments”
• Mac OS X →
• Linux up to you...
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60. •
• getwd()
• > getwd()
• setwd()
• > setwd("/Users/sakaue/Desktop/")
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61. • read.csv()
• CSV
• CSV: Comma Separated Value
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62. 1. demo.csv
• XLS/XLSX
• CSV UTF-8
2. > test <- read.csv(“demo.csv”)
3. > test [Enter]
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63. CSV
...
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64. • read.delim()
•
• delim: delimiter
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65. 1. demo.xls
2. > test2 <- read.delim("clipboard")
Mac : read.delim(pipe(“pbpaste”))
3. > test2 [Enter]
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66. > table(test2[,1])
• 1
> mean(test2[,2])
• 2
> hist(test2[,2])
• 2
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67. •
• CSV read.csv()
• or
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68. CSV
Excel
“y2.d175 | Lasershow! Relax!” by B Rosen
http://www.flickr.com/photos/rosengrant/4751386872/
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69. Agenda
1. R
2.
3.
4.
5. R
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70. Agenda
1. R
2.
3.
4.
5. R
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71. Tuesday, December 6, 11 79

72. Tuesday, December 6, 11 80

73. 1.
2.
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74. 2
Excel SPSS
... orz
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75. Tuesday, December 6, 11 83

76. > age <- c(18, 23, 14, 19,
21, 29, 22, 21, 23, 19, 20, 20,
26, 18, 14, 6, 8, 16, 23, 20)
> hist(age)
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77. Tuesday, December 6, 11 85

78. > score <- c(60, 50, 72, 43, 50,
55, 43, 50, 85, 40)
> words <- c(340, 190, 465, 170,
130, 225,140, 310, 580, 120)
> plot(score,words)
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79. Tuesday, December 6, 11 87

80. > nns <- c(350, 285, 315, 340, 210,
185, 120, 740, 425, 155)
> ns <- c(365, 570, 645, 540, 645,
665, 880, 550, 410, 585)
> boxplot(nns, ns, names=c("NNS", "NS"))
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81. 1.
2.
3.
twitter, FB
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82. Excel
“y2.d175 | Lasershow! Relax!” by B Rosen
http://www.flickr.com/photos/rosengrant/4751386872/
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83. Agenda
1. R
2.
3.
4.
5. R
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84. Agenda
1. R
2.
3.
4.
5. R
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85. Tuesday, December 6, 11 93

86. t
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87. t
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88. • H0
• H1
• H0 (t, χ2, F )
•
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89. t
•
•R t.test()
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90. t
> like <- c(6,10,6,10,7,8,7,9,10,4)
> dislike <- c(3,5,6,4,4,8,4,5,4,7)
> t.test(like,dislike,var.equal=TRUE)
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91. t
> t.test(like,dislike,var.equal=TRUE)
Two Sample t-test
data: like and dislike
t = 3.3041, df = 18, p-value = 0.003946
alternative hypothesis: true difference in
means is not equal to 0 #
95 percent confidence interval: #
0.9831754 4.4168246
sample estimates:
mean of x mean of y
7.7 5.0
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92. Tuesday, December 6, 11 101

93. •
•
• A B
•
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94. : “however”
109 347 8 493
[ ] However, ....
[ ] ..., however, ....
[ ] ..., however.
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95. > freq <- c(109,347,8)
> chisq.test(freq,correct=FALSE)
Chi-squared test for given probabilities
data: freq
X-squared = 391.7371, df = 2, p-value < 2.2e-16
# 2
# http://homepage2.nifty.com/nandemoarchive/toukei_kiso/t_F_chi.htm
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96. •
• t
•
• !
• ...
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97. Tuesday, December 6, 11 107

98. One more thing...
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99. Package
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100. Package
•
• base 1,000
• package
• ex. RMeCab
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101. RMeCab
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102. RMeCab
•
•R MeCab
• R
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103. • RMeCabText() :
• RMeCabFreq() :
• Ngram() : N-gram
• collocate() :
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104. Tuesday, December 6, 11 115

105. Tuesday, December 6, 11 117

106. 2,940 1,785 3,780
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107. twitter: @sakaue
e-mail: tsakaue<AT>hiroshima-u.ac.jp
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