Q 2.12: There are two variables that were collected for a sample of 40 countries, average...
Q 2.12: There are two variables that were collected for a sample of 40 countries, average life expectancy and standard of living. The correlation is nearly 1. Select the correct statement below. A : Larger values of average life expectancy correspond to larger values of standard of living.
B : An increase of A causes decrease of B.
C : An increase in average life expectancy causes an increase in standard of living.
D : Increase in average life expectancy causes a decrease in standard of living
. E : Larger values of average life expectancy correspond to lower values of standard of living
Homework Answers
As the correlation is nearly positive one , and a correlation of nearly one means if one variable increase so the other variable will also increase , no concept of decrease is taken to account . So by that , Option B Option D and Option E are respectively not true .
And as the correlation is nearly one , we can say that for a country the we will have larger life expectancy value corresponding to larger standard of living values
So option A is correct option .
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