a) Find the covariance between the two variables. b) Interpret in plain words the independence between X and Y. (up to 40 words)

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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We expect poorer countries (X=1) to grow faster (Y=1) than richer countries-the
table below displays countries' relative incomes and growth rates.
Poorer than average
(X=1)
Richer than average
(X=0)
Ten-year growth above Ten-year growth below
average (Y=1)
average (Y=0)
0.38
0.14
0.13
a) Find the covariance between the two variables.
0.35
b) Interpret in plain words the independence between X and Y. (up to 40 words)
Transcribed Image Text:We expect poorer countries (X=1) to grow faster (Y=1) than richer countries-the table below displays countries' relative incomes and growth rates. Poorer than average (X=1) Richer than average (X=0) Ten-year growth above Ten-year growth below average (Y=1) average (Y=0) 0.38 0.14 0.13 a) Find the covariance between the two variables. 0.35 b) Interpret in plain words the independence between X and Y. (up to 40 words)
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