Ch5 Vocab Quiz

Question 1

Normal Model, about 68% of the values within 1 s.d. of the mean, about 95% within 2 s.d, and about 99.7% within 3 s.d.

Accepted Answer

Empirical Rule

Question 2

the value found by subtracting the mean and dividing by the standard deviation

Accepted Answer

standardized value

Question 3

numerical attribute of a set of data

Accepted Answer

statistics

Question 4

type of Normal model with mean 0 and standard deviation 1

Accepted Answer

standard

Question 5

the sum of the squared deviations from the mean, divided by the count minus one

Accepted Answer

variance

Question 6

the process of multiplying each value by a constant that multiplies the measure of position and spread

Accepted Answer

rescale

Question 7

the square root of the variance

Accepted Answer

standard deviation

Question 8

numerical attribute of a model

Accepted Answer

parameter

Question 9

tells how many standard deviations a value is from the mean

Accepted Answer

z-score

Question 10

a display to help assess whether a distribution of data is approximately Normal

Accepted Answer

normal probability plot

Question 11

center of the Normal model

Accepted Answer

Mean

Question 12

model used for certain unimodal, symmetric distributions

Accepted Answer

Normal

Questions 12