1.
The R-squared formula is given by,
2.
The standard error of regression is given by,
Where, is the estimated value.
3.
The formula to calculate the t-test on slope coefficient is given by,
where, and
for all i.
4.
Reject the null hypothesis when the calculated value of t is greater than the tabulated value at n-2 degrees of freedom at level of significance.
5.
There is no formula to calculate the P-value for the slope coefficient. Use the t distribution to get the probability associated with the test statistic at level of significance.
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