Multiple Choice
In the quadratic regression model 
if the term 
2 is ______ zero,then the parabola opens __________.
A) Less than,upward
B) Greater than,upward
C) Greater than,either upward or downward
D) Less than,either upward or downward
E) Equal to,downward
Correct Answer:
Verified
Correct Answer:
Verified
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