Two paired or matched samples would imply that:

• two data values are collected from the same source (elements) for two dependent samples
• two data values are collected from the same source (elements) for two independent samples
• data are collected on two variables from the elements of two independent samples
• data are collected on one variable from the elements of two independent samples

We can use the analysis of variance procedure to test hypotheses about:

• the proportion of one population
• the mean of one population
• two or more population proportions
• two or more population means

The graph of a cumulative frequency distribution is a(n):

• frequency histogram
• line graph
• stem-and-leaf display
• ogive

In a hypothesis test, a Type II error occurs when:

• a false null hypothesis is rejected
• a false null hypothesis is not rejected
• a true null hypothesis is not rejected
• a true null hypothesis is rejected

The mean of a discrete random variable is the mean of its:

• percentage distribution
• frequency distribution
• probabilitydistribution
• second and third quartiles

If you divide the number of elements in a sample with a specific characteristic by the total number of elements in the sample, the dividend is the:

• sample distribution
• sample proportion
• sampling distribution
• sample mean

A linear regression:

• gives a relationship between two variables that can be described by a line
• gives a relationship between two variables that cannot be described by a line
• gives a relationship between three variables that can be described by a line
• contains only two variables