If all the squared terms in a quadratic function have a negative coefficient and there are no ...

If all the squared terms in a quadratic function have a negative coefficient and there are no cross-product terms, then the function is a _____ function.
a. convex quadratic
b. nonlinear objective
c. concave quadratic
d. negative elliptical

Q. 2

______________ refers to the degree of correlation among independent variables in a regression model.
a. Multicollinearity b. Tolerance
c. Rank d. Confidence level

Q. 3

A function that is bowl-shaped down is called a ___________ function.
a. concave
b. convex
c. conic
d. linear

Q. 4

The _____________ is an indication of how frequently interval estimates based on samples of the same size taken from the same population using identical sampling techniques will contain the true value of the parameter we are estimating.
a. residual b. tolerance factor
c. confidence level d. accuracy level

Q. 5

A global minimum
a. is also a local maximum.
b. need not be a local maximum, but vice versa is true.
c. is also a local minimum.
d. need not be local minimum, but vice versa is true.

Q. 6

A normally distributed error term with mean of zero would
a. have values that are symmetric about the variance.
b. allow more accurate modeling.
c. yield biased regression estimates.
d. be a hyperbolic curve.

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If all the squared terms in a quadratic function have a negative coefficient and there are no ...

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