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R C JAVA 5
R EXCEL GUI 6
R SAS SPSS 7
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R EXCEL GUI R GUI RR Commander 9
R Auckland Ross Ihaka Robert Gentleman Fred Hutchinson Cancer Research Center AT&T Lucent Technology S R R R RjpWiki R 10
R EXCEL 11
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rgl 14
TeachingDemos 15
R R 16
1. R 2. 1+2 Enter 3. sqrt(2) 4. log(2) 5. 4. log(2) 10 e help(log) log 6. 1.5. R 17
1. R 2 Windows Vista R R 18
2.1+2 [Enter] R 19
3. 2 [Tab] Tab [Tab] 20
R sin(x) cos(x) tan(x) log(x) log10(x) sinx cosx tanx log e x log 10 x sinh(x) cosh(x) tanh(x) exp(x) sqrt(x) sinhx coshx tanhx e x x abs(x) trunc(x) round(x) floor(x) ceiling(x) 21
4. log2 # ; 22
5. log() 23
5. log() 24
5. log() 25
6. R q() quit() R [] 26
R? 27
R R 28
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5 5 5 30
c() 1 1 1 1 31
R length() 32
R cor(x) max(x) mean(x) median(x) min(x) prod(x) summary(x) sd(x) sum(x) var(x) Esc 33
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1. R 0.8-4 x 2. trunc(x) floor(x)? 3. 5 y 1 2 3 4 5 4. y 5. 3. y 6. y x z 7. 6. z 6 35
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sum() mean() median() 2 37
var() 2 1 sd() 38
x 70 10 90% x 70 3.5 3.5 50% x 10 5 (3) 6 (4) 39
1. 2. matrix(,, ) 40
R chol(a) crossprod(a) eigen(a) ginv(a) qr(a) svd(a) solve(a) t(a) A A A A MASS A QR A A A 41
A[1, ] A[, 1] A[1, 2] A[c(1,2), 3] A[c(1,2), c(2,3)] A 1 A 1 A 1 2 A 1, 2 3 A 1, 2 2, 3 42
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