Exam 19: Appendix A: Behavioral Statistics

The index of how much a typical score differs from the mean of a group of scores is known as the

If two variables have a correlation of +1.00, then

It is important to keep in mind that correlation _____ causation.

A bell-shaped distribution, with a large number of scores in the middle, tapering to very few extremely high and low scores is known as a

Z-scores

On a graph, the horizontal line or the X axis is called the _____, while the vertical line or Y axis is called the _____.

In psychology, any experimental result that could have occurred by chance only 5 times (or less) out of 100 is considered to be

Which of the following correlation coefficents indicates the strongest relationship?

The more time students spend studying, the higher their grades are.This would be a

The mean, median, and _____ are measures of central tendency.

The fewer days that students attend class, the lower their grades.This would be a

Carla and her five girlfriends went shopping and spent $20, $12, $13, $8, $13, and $9, respectively, on cosmetics.The mode of their expenditures is

If you add up all the scores and then divide by the number of scores, you arrive at the

How much must two means differ before we can consider the difference "real" and not due to chance? To answer this question, we must use

The Pearson r is the most commonly used

Which of the following is NOT one of the three types of descriptive statistics?

The propensity for a majority of scores to fall in the midrange of possible values is referred to as

_____ statistics are used to summarize large amounts of data so that they become more meaningful and easier to communicate to others.

A _____ is the existence of a consistent, systematic relationship between two events, measures, or variables.

An advantage of using the mode is that it