Unit 9

Question 1

A _______ distribution is a statistical distribution of data which is symmetrical and in which the mean, median, and mode are equal.

Answer 1

normal

Question 2

A standard normal distribution is a normal distribution in which the mean is _______ and the standard deviation is 1.

Answer 2

0

Question 3

The ______ is the average value of a set of numerical data, found by adding all the values and dividing by the number of elements in the set.

Answer 3

mean

Question 4

The _____ is the average of the sum of the squared differences of the mean from each element in a set of numerical data.

Answer 4

variance

Question 5

The _____ deviation is the square root of the variance in a set of numerical data.

Answer 5

standard

Question 6

The _______ of a counting number n, written n!, is the product of the counting number, n, and all of the counting numbers less than n.

Answer 6

factorial

Question 7

A ______ coefficient is the coefficient of each term of the polynomial expansion of (a+b)n.

Answer 7

binomial

Question 8

A compound event is two or more events occurring at the ____ time.

Answer 8

same

Question 9

The ______ principle means if a single event has m choices and a second event has n choices, the total number of possible outcomes for the compound event is m x n outcomes.

Answer 9

counting