sisters and brothers. how strongly do physical characteristics of sisters and brothers correlate ? here are...

sisters and brothers. how strongly do physical characteristics of sisters and brothers correlate ? here are data on the heights (in inches) of 12 adult pairs

brothers 71 68 66 67 70 71 70 73 72 65 66 70

Sister 69 64 65 63 65 62 65 64 66 59 62 64

a) use your calculator or software to find the correlation and the equation of the least-squares line for predicting sister's height from brother's height. make a scatter-plot of the data , and add the regression line to your plot.

b)Damien is 70 inches tall . Predict the height of his sister Tonya . Based on the scatterplot and the correlation r , do you expect your prediction to be very accurate? why?

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orchestra answered 2 years ago

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