2-3

Question 1

The listing and summarizing of data in a practical, efficient way

Answer 1

Descriptive statistics

Question 2

An arrangement of data that indicates how often a particular score or observation occurs

Answer 2

Frequency distribution

Question 3

A graph of frequency distribution shaped like a symmetrical, bell-shaped curve; a graph of normally distributed data

Answer 3

Normal curve

Question 4

A number that describes something about the “average” score of a distribution

Answer 4

Central tendency

Question 5

A measure of difference, or spread of data

Answer 5

Variability

Question 6

A measure of variability that describes an average distance of every score from the mean

Answer 6

Standard deviation

Question 7

Describes the direction and strength of the relationship between two sets of variables

Answer 7

Correlation coefficient

Question 8

Numerical methods used to determine whether research data support a hypothesis or whether results were due to chance

Answer 8

Inferential statistics

Question 9

The branch of mathematics concerned with summarizing and making meaningful inferences from collections of data

Answer 9

Statistics