00:01
The following data is given in the question.
00:04
A table between unemployment rates and the civil disturbances is given.
00:09
Also, the coefficient of determination of data for this data, r squared, is given as 0 .4048.
00:32
And the regression equation is, y -cap is equal to 3 .6040.
00:37
Plus 0 .7389 x.
00:44
So this is the regression equation.
00:46
Now from this we can calculate.
00:49
So here we have 1 minus r square represents the variation in variation in by not explained by x.
01:01
Here r square is equal to 0 .4048 therefore 1 minus r square will be equal to 1 minus 0 .4048 that is 0 .592, which is 59 % approximately 59 % variation.
01:24
50 % variation in sales cannot be explained by other factors.
01:30
Now coming to the next part, the correlation coefficient r will be equal to square root of r square, which is equal to square root of 0 .4048.
01:43
So this can be calculated as 3...