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

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
icon
Related questions
Question
257
24. In the previous problem we noted that the differ-
ences in cognitive skills tend to be bigger among
older people than among younger people. These
differences are often called diversity. Similarly, the
differences in performance from trial to trial for the
same person are often called consistency. Research
in this area suggests that consistency of perfor-
mance seems to decline as people age. A study by
Wegesin and Stern (2004) found lower consistency
(more variability) in the memory performance
scores for older women than for younger women.
he following data represent memory scores
obtained for two women, one older and one
younger, over a series of memory trials.
a. Calculate the variance of the scores for each
Woman.
b. Are the scores for the younger woman more con-
sistent (less variable)?
Older
8.
9
9
8.
8.
8.
Transcribed Image Text:257 24. In the previous problem we noted that the differ- ences in cognitive skills tend to be bigger among older people than among younger people. These differences are often called diversity. Similarly, the differences in performance from trial to trial for the same person are often called consistency. Research in this area suggests that consistency of perfor- mance seems to decline as people age. A study by Wegesin and Stern (2004) found lower consistency (more variability) in the memory performance scores for older women than for younger women. he following data represent memory scores obtained for two women, one older and one younger, over a series of memory trials. a. Calculate the variance of the scores for each Woman. b. Are the scores for the younger woman more con- sistent (less variable)? Older 8. 9 9 8. 8. 8.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps with 1 images

Blurred answer
Similar questions
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman