Sample of n9 patients the scores for 7 minute screen average

Sample of n=9 patients, the scores for 7 minute screen averaged M=7, SS=92, The cognetive test scores averaged M=17, SS=236 for these data SP=127

Find the regression equation for predicting congitive scores from 7 minute screen score and discover What percentage of variance in the cognitive scores is accounted in the regression equation?

C the intercept of the regressionl line is___________ and The critical value for r = _____.

The slope of the regression line is?

Hence regression equation is

y =0.186x+15.7

The correlation coefficient r =

r^2 = coefficient of variation = 0.034613

Percentage of variation = 3.4613

n	9

x bar	7	E(X^2)	92
y bar	17	E(Y^2)	236

	Intercept	{17(92)-(7)(127)}/(92-7^2)
		15.7

	Slope	(127-119)/43
		0.186047

Sample of n=9 patients, the scores for 7 minute screen averaged M=7, SS=92, The cognetive test scores averaged M=17, SS=236 for these data SP=127 Find the regre

Sample of n9 patients the scores for 7 minute screen average

Solution

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