Measurement and Basic Statistics Describing Data

Question 1

Classification or categorization based on one or more distinguishing characteristics

Answer 1

Nominal Scales

Question 2

Aside from classification, rank-ordering on some classifications is permissible.

Answer 2

Ordinal Scales

Question 3

No absolute zero point, can be added and subtracted not multiplied. Example: IQ scores

Answer 3

Interval Scales

Question 4

Has all properties of nominal, ordinal, and ratio scales but has an absolute zero point

Answer 4

Ratio Scales

Question 5

a set of test scores arrayed for recording or study.

Answer 5

Distribution

Question 6

a straightforward, unmodified accounting of performance that is usually numerical.

Answer 6

Raw Score

Question 7

all scores are listed alongside the number of times each score occurred.

Answer 7

Frequency Distribution

Question 8

histogram, bar graph, and frequency polygon.

Answer 8

Graphical representations:

Question 9

statistic that indicates the average or midmost score between extreme scores in a distribution.

Answer 9

Measure of Central Tendency

Question 10

sum of the observations divided by the number of observations.

Answer 10

Mean

Question 11

defined as the middle score of the distribution.

Answer 11

Median

Question 12

is the most frequently occurring score in a distribution

Answer 12

Mode