Chpater 2.3

Question 1

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

Answer 1

Statistics

Question 2

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

Answer 2

Descriptive statistics

Question 3

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

Answer 3

Frequency distribution

Question 4

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

Answer 4

Normal curve

Question 5

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

Answer 5

Central Tendency

Question 6

A measure of differencce, or spread of data?

Answer 6

Variability

Question 7

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

Answer 7

Standard deviation

Question 8

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

Answer 8

Correlation coefficient

Question 9

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

Answer 9

Inferential statistics