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Ans : Given that to be a regression equation involved 10 independent variable and 242 observation . So, this is multiple regression model
here we have to testing the significance of each pair of independent variables coefficient
Total number of observation = 242
and independent variable = 10
So, the degrees of freedom for the critical value of t is given by
df = (242 - 10 )-1 = 231
df=231
Ans : A regression equation involved 10 independent variable and 242 observation 231 degrees of freedom does th critical value of t for testing the significance of each of the independent variable coefficient
degree of freedom = 231
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