the following results were obtained from records of age (x) and symbolic blood pressure (y) of a group of 10 men: mean x=53 mean y=142 and variance x= 130 and variance y=165 find the appropriate regression equation and use it to estimate the blood pressure of a man whose age is 45.
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Given:
the following results were obtained from records of age (x) and symbolic blood pressure (y) of a group of 10 men Mean X=53 Y=142 and variance X=130 Y=142 and
To Find:
find the appropriate regression equation and use it to estimate the blood pressure of a man whose age is 45
Solution:
It is given that X is for age and Y is for symbolic blood pressure
now using the formula for variance
now calculating the value of
Now the regression equation of symbolic blood pressure(Y) on their age(X) is
Now for X=45
Hence, the man of age 45 has a symbolic blood pressure of 120.5
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