MATH 220 Vocabulary Quiz 2 - Ward

μx

μx

population mean of x

μy

population mean of random variable y

x w/ line on top

sample mean of x

y w/ line on top

sample mean of y

σx

population standard deviation of random variable x

σx^2

population variable of random variable x

Sx

sample standard deviation

P(x=2)

probability that x = 2

X~N(7, 0.5)

RV x is distributed normally with a mean of 7 and a standard deviation of 0.5

Mean of distribution

affects the location of the curve on a number line

SD of distribution

affects the width of the curve on a number line

X~Bernoulli(0.6)

RV x is distributed Bernoulli with the probability of X=1 being 0.6