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Dr. ewing measured individual differences in a large sample of individuals using intelligence testing. if performances at each age level formed a normal distribution, the results were probably _____-shaped.
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Dr. ewing measured individual differences in a large sample of individuals using intelligence testing. if performances at each age level formed a normal distribution, the results were probably _____-shaped. l u star bell

User SCha
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A normal distribution illustration exhibits a true symmetric shape. This symmetry is the characteristic of this type of distribution.

Thus, the results were probably symmetrically-shaped (similar to an inverted U).

User Royketelaar
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