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# Module 7-8 Vocabulary - Statistical Reasoning in Everyday Life & FAQ about Psychology

Across
the arithmetic average of a distribution, obtained by adding the scores and then dividing by the number of scores
numerical data that allow one to generalize
the middle score in a distribution; half the scores are above it and half are below it.
a statistical statement of how likely it is that an obtained result occurred by chance.
a symmetrical, bell-shaped curve that describes the distribution of many types of data; most scores fall near the mean and fewer and fewer near the extremes
a bar graph depicting a frequency distribution
a computed measure of how much scores vary around the mean score.
Down
numerical data used to measure and describe characteristics of groups
the postexperimental explanation of a study, including its purpose and any deceptions, to its participants
the enduring behaviors, ideas, attitudes, values and traditions shared by a group of people and transmitted from one generation to the next
a representation of scores that lack symmetry around their average value
an ethical principle that research participants be told enough to enable them to choose whether they wish to participate
the most frequently occurring score(s) in a distribution
the difference between the highest and lowest scores in a distribution.