Coefficients for Output A Standardized Coefficients Coefficients Model Constant)
ID: 3326151 • Letter: C
Question
Coefficients for Output A Standardized Coefficients Coefficients Model Constant) 2 (Constant x-square 2.548 1.100 2.9473.025 1.018 634 885 8.061 974 8191.872 156 1.559 136 120 .000 544 078 878 a De Variable: y (a) Given output A (above), is the regression line for the regression of Yon X straight? Justify your answer. (10 points) Coefficients for Output B Standardized Coefficients Model 7.240 11.500 5.300 Constant) 2 (Constant) 3 (Constant) 1.588 2.246 1.607 4761.430 163 486 2.360 124 743 1.619 044 6576303 1.072 2.567 2.411 3.764 270 345 1.065 146 3.991 021 050 548 1.076 grp 001 009 a Dependent Variable: yExplanation / Answer
Result:
a). To test the regression coefficient for x square,, t=0.158, P=0.878 which is > 0.05 level.
It is not significant. The regression is straight line .
b).
To test the regression coefficient for x*grp , t=0.021, P=0.984 which is > 0.05 level.
It is not significant. This gives regression lines are parallel .
c).
In the model 1, the coefficient for grp is positive and the value is 5.3.
The group with higher code is higher on Y.
d).
To test the regression coefficient for x , t=3.991, P=0.001 which is < 0.05 level.
It is significant. This gives X is important in this study.