Vocab 2-3

Question 1

Statistics

Answer 1

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

Question 2

Descriptive statistics

Answer 2

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

Question 3

Frequency distribution

Answer 3

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

Question 4

Normal curve

Answer 4

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

Question 5

Central tendency

Answer 5

A number that describes the average score of distribution

Question 6

Variability

Answer 6

A measure of speed, or spread of data

Question 7

Standard deviation

Answer 7

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

Question 8

Correlation coefficient

Answer 8

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

Question 9

Inferential statistics

Answer 9

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