AP Psychology Unit 0 Vocabulary Quiz #3

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Statistics

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A large amount of data can be collected in research studies. Psychologists need to make sense of the data.

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Descriptive Statistics

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Refers to numerical measures used to summarize and describe the characteristics of a dataset.

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Inferential Statistics

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Involves using data from a sample to make inferences or predictions about a larger population.

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Measure of Central Tendency

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Statistical tools used to describe the central or average value of a set of data.

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Mean

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A measure of central tendency in statistics that represents the average value of a set of data.

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Median

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A measure of central tendency in statistics that represents the middle value of a data set when the values are arranged in ascending or descending order.

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Mode

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Measure of central tendency in statistics that represents the most frequently occurring value in a data set.

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Range

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Represents the difference between the highest and lowest values in a data set.

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Normal Curve

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The majority of the data falls near the center, or mean, of the distribution, with progressively fewer values occurring further away from the mean in both directions.

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Regression to the Mean

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When extreme scores tend to get closer to the average when measured again. This happens because extreme scores are often due to temporary factors, not lasting characteristics.