25724. In the previous problem we noted that the differ-ences in cognitive skills tend to be bigger amongolder people than among younger people. Thesedifferences are often called diversity. Similarly, thedifferences in performance from trial to trial for thesame person are often called consistency. Researchin this area suggests that consistency of perfor-mance seems to decline as people age. A study byWegesin and Stern (2004) found lower consistency(more variability) in the memory performancescores for older women than for younger women.he following data represent memory scoresobtained for two women, one older and oneyounger, over a series of memory trials.a. Calculate the variance of the scores for eachWoman.b. Are the scores for the younger woman more con-sistent (less variable)?Older8.998.8.8.

We know : Difference in performance from trial to trial for same person is known as consistency. We…

Answered: a. Calculate the variance of the scores…

Algebra & Trigonometry with Analytic Geometry

13th Edition

ISBN:9781133382119

Author:Swokowski

Publisher:Swokowski

Chapter2: Equations And Inequalities

Section2.6: Inequalities

Problem 80E

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a. Calculate the variance of the scores for each woman. b. Are the scores for the younger woman more con- sistent (less variable)? Younger Older 8. 7. 6. 6 8. 7. 8. 8. 8 5 7876