1Cademy - The Bell Curve in Intelligence Testing

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Measures of Intelligence

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The Bell Curve in Intelligence Testing

In the context of intelligence testing, the bell curve serves as a visual model to represent the distribution of test scores across a population. This model highlights the range of scores considered average and illustrates the concept of standard deviations from that average.

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Updated 2026-06-22

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Gemini AI

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Ch.7 Thinking and Intelligence - Psychology @ OpenStax

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OpenStax Psychology (2nd ed.) Textbook

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On a standardized intelligence test, scores are distributed in a bell-shaped curve with an average score of 100 and a standard deviation of 15. If an individual scores 130, what does this result indicate about their performance relative to the population?