À researcher wishes to test the idea that shoe size and mathematical ability are correlated;, that is, people with larger feet have higher mathematical skills. To test this he conducts a study of an entire town of 2000 persons measuring their shoe size and administering a math test. He finds that there is a significant correlation between shoe size and math skills with people with larger feet having higher math skills. (a) What might an important problem with this approach? (b) The researcher decides to use data only for adults ages 21 to 60 to compute a correlation coefficient. What value of r should he expect?
À researcher wishes to test the idea that shoe size and mathematical ability are correlated;, that is, people with larger feet have higher mathematical skills. To test this he conducts a study of an entire town of 2000 persons measuring their shoe size and administering a math test. He finds that there is a significant correlation between shoe size and math skills with people with larger feet having higher math skills. (a) What might an important problem with this approach? (b) The researcher decides to use data only for adults ages 21 to 60 to compute a correlation coefficient. What value of r should he expect?
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter4: Equations Of Linear Functions
Section4.5: Correlation And Causation
Problem 23PFA
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Transcribed Image Text:A researcher wishes to test the idea that shoe size and mathematical ability are correlated;,
that is, people with larger feet have higher mathematical skills. To test this he conducts a
study of an entire town of 2000 persons measuring their shoe size and administering a math
test. He finds that there is a significant correlation between shoe size and math skills with
people with larger feet having higher math skills.
(a) What might an important problem with this approach?)
(b) The researcher decides to use data only for adults ages 21 to 60 to compute a
correlation coefficient. What value of r should he expect?
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