Chapter 7

Question 1

equation used to compute probabilities of continuous random variables - area of rectangle must equal 1, all values must be greater than or equal to 0

Answer 1

probability density function (pdf)

Question 2

a continuous random variable has a ___ if its relative frequency histogram has the shape of a normal curve (bell-shaped, symmetric)

Answer 2

normal distribution

Question 3

points where the curvature of a normal curve (bell-shaped graph) changes - one standard deviation on either side of mean

Answer 3

inflection points

Question 4

distribution with a mean of 0 and a standard deviation of 1

Answer 4

standard normal distribution

Question 5

graph that plots observed data versus normal scores (expected z-scores)

Answer 5

normal probability plot

Question 6

expected z-score of data value, assuming that the distribution of the random variable is normal

Answer 6

normal score