Chapter 2

Question 1

Raw data

Answer 1

Refers to the scores or numbers that have been collected but not organized or summarized

Question 2

Ranked distribution

Answer 2

Created by ordering the scores, which means rearranging the data so the highest number is at the top of the list and the lowest is at the bottom

Question 3

Simple frequency distribution

Answer 3

Created by listing all the possible score values in any distribution and then indicating their frequency

Question 4

Frequency

Answer 4

How often each score appears

Question 5

Grouped frequency distribution

Answer 5

Raw data are combined into class interval

Question 6

Class interval

Answer 6

Equal-sized groups

Question 7

Range

Answer 7

Full extent of the scores from highest to lowest

Question 8

Apparent limits

Answer 8

Limits normally listed for a grouped frequency distribution

Question 9

Real limits

Answer 9

Lower apparent limits minus 0.5 and the upper apparent limit plus 0.5

Question 10

Midpoint

Answer 10

Exact center of the class interval

Question 11

Cumulative frequency

Answer 11

Total number of scores that fall below the upper real limit of the class interval

Question 12

Relative frequency

Answer 12

Proportion of scores from the distribution that fall within the class interval

Question 13

Cumulative relative frequency

Answer 13

Total proportion of scores that lie below the upper real limit of the class interval

Question 14

Cumulative percent

Answer 14

Multiply the cumulative relative frequency by 100