AP Psychology Modules 7-8

Histogram

A bar graph depicting a frequency distribution

Standard Deviation

A computed measure of how much scores vary around the mean score

Skewed Distribution

A representation of scores that lack symmetry around their average value

Statistical Significance

A statistical statement of how likely it is that an obtained result occurred by chance

Informed Consent

An ethical principle that research participants be told enough infer to enable them to choose whether they wish to participate

Inferential Statistics

Numerical data that allow one to generalize

Descriptive Statistics

Numerical data used to measure and describe characteristics of groups. Includes measures of central tendency and measures of variation

Debriefing

Post experimental explanation of study including purpose and any deceptions

Mean

The arithmetic average of a distribution obtained by adding the scores and the dividing by the number of scores

Range

The difference between the highest and lowest scores in a distribution

Median

The middle score in a distribution, half the scores are above it, half are below

Mode

The most frequently occurring scores in a distribution

Normal Curve

a symmetrical bell shaped curve that describes the distribution of many types of data, most scores fall near the mean

Culture

the enduring behaviors, ideas, attitudes, values, and traditions shared by a group of people