Exam 8: Making Sense of the Numbers

The ________ represents how far the scores are, on average, from the mean.

Which would you NOT use to show how many people live in each of four different regions of the United States (Midwest, North, South, West)?

____ refers to very high or very low scores, which have a large influence on the mean.

Which is not used with quantitative or continuous variables?

The ______ is a measure of the center of a distribution, such as average height or weight.

The number of successes divided by the number of failures is defined as the:

Which of the following would you use to show the relationship between age (in years) and income (in dollars)?

The ____ is the standard deviation divided by the mean, and is useful when making comparisons across variables with different scales or units.

Which of the following is equal to the square of the standard deviation?

In a small rural town, everyone has a high school diploma, but one resident has a master's degree .How would you refer to this one case?

In a study of employees, 20 percent of the variation in job satisfaction can be explained by variation in the pay the employees receive .The 20 percent figure is referred to as

A researcher calculated the correlation, Pearson r, between two variables in order to measure the strength of the relationship between the two variables, and it to be close +1, meaning that there was a ________ positive relationship.

_____ are scores on a variable converted to standard deviation units.

The rate at which new cases of a disease or phenomenon appear in a population is referred to as the:

A researcher measured the body mass index (BMI) of a large sample of adolescents in an urban school system .(BMI is the ratio of a person's weight in kilos divided by the square of their height in meters.) Which would you use to show the distribution of BMI?

Researchers can better understand the distribution of a categorical variable by counting the number of individuals or cases in each category .This is referred to as the:

The number or share of a population that has a particular condition is called

A museum director received an evaluation that estimated that a new advertising campaign increased museum visits between 2 and 8 percent (with 95 percent confidence) .The director decided this was not enough visitors to be worth the effort, so the campaign was discontinueD. According to the director, which of the following was lacking in the relationship between the campaign and the number of museum visits?