_{The marks obtained by seven students in Statistics and Accountancy are as follows:}

_{Age(X) 56 42 36 47 49 42 60 72 63 55}

_{Blood 147 125 118 128 145 140 155 160 149 150}

_Pressure(Y)

_{Given the form of the scattered diagram, does it appear that a straight line provides an accurate}

_{model for the data?}

_{Find the correlation coefficient between Age(X) and Blood Pressure(Y) and discuss its nature.}

_{Find the two lines of regression.}

_{Estimate the blood pressure of a woman whose age is 45}