Module 3: Statistical Reasoning (Vocabulary) Flashcards
Mode
The most frequently occurring score(s) in a distribution.
Mean
The arithmetic average of a distribution, obtained by adding the scores and then dividing by the number of scores.
Median
The middle score in a distribution; half the scores are above it and half are below it.
Range
The difference between the highest and lowest scores in a distribution.
Standard deviation
A computed measure of how much scores vary around the mean score.
Normal curve
A symmetrical bell-shaped curve that describes the distribution of many types of data; most scores fall near the mean (about 68% fall within one standard deviation of it) and fewer and fewer near the extremes.
Statistical significance
A statistical statement of how likely it is that an obtained result occurred by chance.