glossary

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z symbols

A

all – logic “ALL”
any – logic “ANY”
aov – anova
apply –
attach – attach a data set

B

boxplot – boxplot
break – flow control “BREAK”

C

c – concatenation
cbind – column bind
chisq.test – conduct chi square test
colMeans – calc. mean for each column
colSums – calc. sum for each column
cor – calc. correlations
cov – calc. covariances

D

data.frame – creating data frame
dens – calc. density
det – calc. determinant
detach – detach a data set

E

eig – cal. eigen values and vectors
else – flow control “ELSE”

F

factanal – factor analysis
for – flow control “FOR”

G

glm – generalized linear model

H

hclust – hierarchical clustering
hist – plotting histogram

I


if – flow control “IF”
ifesle – flow control “IFELSE”

J

K

kmeans – kmeans clustering

L

lm – linear model

M

matrix – creating matrix
max
mean – calc. means
min

N

O

P

pf
pnorm
princomp – principal component analysis
print – print
prod – products
pt

Q

q – quit R
qf –
qnorm –
qt –
qtukey –

R

rbind – row bind
read.csv – import a csv file
read.table – import a table
rep – replicate
repeat – flow control “REPEAT”
rev –
rowMeans – calc. mean for each row
rowSums – calc. sum for each row
rnorm – generate random numbers from NORMAL dist.
runif – generate random numbers from UNIFORM dist.

S

sample – sampling …
sd – calc. stadDev.
seq – create sequence
sort – sort
source –
sum – calc. sum
summary – print summary

T

t – transpose
table –
tapply
t.test – conduct t-test
TukeyHSD – conduct Tukey’s HSD test

U

V

var- cal. (co)variances

W

which – give the TRUE indices
while – flow control “WHILE”
write.table – export data

X

Y

Z

symbols

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