Concept explainers
To write equation of regression.
Answer to Problem 4.18EP
Explanation of Solution
Given information:
Formula used:
The equation of regression
Where,
y is the dependent variable (that’s the variable that goes on the y axis)
And x is the independent variable (i.e. it is plotted on the x axis), b is the slope of the line and ais the y-intercept.
n is total number of variables.
Calculation:
Table
From table
n= 6
Using formula to calculate, a
On solving,
Further solving,
So,
Using formula to calculate, b
On solving,
On solving,
On solving,
b= 7.3 Substituting values of a and b in the regression equation to obtain regression equation
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