Answer:
b) 0.3969
Step-by-step explanation:
Given that the correlation between two variables is –0.63 for a sample of 20 observations.
Correlation is the measure of linear association between two variables. Normally this varies from -1 to 1 . Here this is given as -0.63
Coefficient of determination has to be found out
Coefficient of determination, being the cause of variation caused by one variable on another is obtained by square correlation coefficient.
Hence coefficient of determination = [tex]r^2 = (-0.63)^2\\=0.3969[/tex]
Hence correct option is option b) 0.3969
