BIOLOGICAL BASES OF BEHAVIOR
PREDICTING INDIVIDUAL DIFFERENCES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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an increasing slope
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a normal bell curve
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an equilateral figure
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a negative correlation
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Detailed explanation-1: -Based on the 68-95-99.7 Rule, approximately 68% of the individuals in the population have an IQ between 85 and 115. Values in this particular interval are the most frequent. Approximately 95% of the population has IQ scores between 70 and 130. Approximately 99.7% of the population has IQ scores between 55 and 145.
Detailed explanation-2: -A bell curve refers to the graphical representation of normal probability distribution. The underlying standard deviations of this distribution from the median or the highest point of the curve give it the shape of a curved bell.
Detailed explanation-3: -IQ test scores are derived from a Bell Curve distribution with a mean value and standard deviations The normed IQ score of the general population is 100, therefore; 100 is the center of the distribution. For most IQ tests, the standard deviation range is usually 15 points.
Detailed explanation-4: -Bell Curve: When IQ scores are plotted on a graph, they typically follow a bell-shaped curve.1 The peak of the “bell” occurs where the majority of the scores lie. The bell then slopes down to each side; one side represents lower than average scores and the other side represents scores that are above the average.