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Compute the covariance. (round to three decimal places as needed.)

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The following is a set of data from a sample of n= 11 items. Complete (a) through ?;X 38 28 18 8 18 34 22 26 20 28 8;Y 19 14 9 4 9 17 11 13 10 14 4;a. Compute the covariance. (round to three decimal places as needed.);b. Compute the coefficient of correlation.;The coefficient of correlation measures the relative strength of a linear relationship between two variables.;Compute the standard deviation for X. Round to six decimal places as needed;Compute the sample standard deviation for Y.;Compute the coefficient of correlation for X and Y;c. How strong is the relationship between X and Y? Explain.;a positive correlation indicates that as one variable rises, the other variable also tends to rise.;a negative correlation indicates that as one variable rises, the other vaiable tends to fall.;a perfect correlation indicates that if a scatter plot were made, all points could be connected with a straight line. A;perfect positive correlation is a correlation of 1. a perfect negative correlation is a correlation of -1.;d.Use the information above, and the results for covariance and correlation, to decide what type of relationship and;how strong of a relationship, X and Y have.;Additional Requirements;Min Pages: 1;Level of Detail: Only answer needed

 

Paper#30128 | Written in 18-Jul-2015

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