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AP Psych Modules 7 & 8
Terms in this set (14)
To observe and record behavior
To detect naturally occurring relationships; to assess how well one variable predicts another
To explore cause and effect
numerical data used to measure and describe characteristics of groups. Includes measures of central tendency and measures of variation.
a bar graph depicting a frequency distribution.
the most frequently occurring score(s) in a distribution.
the arithmetic average of a distribution, obtained by adding the scores and then dividing by the number of scores.
the middle score in a distribution; half the scores are above it and half are below it.
a representation of scores that lack symmetry around their average value.
the difference between the highest and lowest scores in a distribution.
a computed measure of how much scores vary around the mean score.
a symmetrical, bell-shaped curve that describes the distribution of many types of data; most scores fall near the mean (about 68 percent fall within one standard deviation of it) and fewer and fewer near the extremes.
numerical data that allow one to generalize—to infer from sample data the probability of something being true of a population.
a statistical statement of how likely it is that an obtained result occurred by chance.
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