Commands set-2 in R
xx = matX[,2:3]
regY = lm(y~xx)
regY
summary(regY)
anova(regY)
x21 = c(34, 36, 30, 29, 25, 12, 45, 26, 20, 32)
y21 = c(45, 46, 48, 50, 40, 34, 66, 35, 30, 49)
xx21 = matrix(c(x21,x22), ncol2)
xx21 = matrix(c(x21,x22), ncol=2)
reg22 = lm(y21~xx21)
reg22
reg23 = lm(y21~x21+x22)
reg23
summary(reg22)
anova(reg22)
summary(reg22)$coeff
summary(reg22)$coeff[1]
summary(reg22)$coeff[2]
summary(reg22)$coeff[3]
b2 = summary(reg22)$coeff[3]
b1 = summary(reg22)$coeff[2]
b0 = summary(reg22)$coeff[1]
yest = b0 + b1 * x21 + b2*x22
yest
res22 = y21 - yest
t.test(y21, mu = 40)
test that mean of x21 and x22 are equal
t.test(x21,x22)
t.test(x21,x22, var.equal = T)
grp = rep(1:3, each = 10)
aov(c(x21, x22, y21)~grp)
mean3 = aov(c(x21, x22, y21)~grp)
summary(mean3)
die = c(1:6)
die1 = sample(die, 300, replace = T)
die2 = sample(die, 300, replace = T)
table(die1)
table(die2)
dieS = die1 + die2
table(dieS)
dieD = die1 - die2
table(dieD)
dieDa = abs(die1 - die2)
table(dieDa)
coin = c(0,1)
toss2 = sample(coin, 1000, replace = T, prob = c(.25, ,.75))
toss2 = sample(coin, 1000, replace = T, prob = c(.25, .75))
table(toss2)
die222 = sample(die, 900, replace = T, prob = c(1,2,1,2,1,2))
table(die222)
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