题目内容

A nonlinear function

A. makes little sense, because variables in the real world are related linearly.
B. can be adequately described by a straight line between the dependent variable and one of the explanatory variables.
C. is a concept that only applies to the case of a single or two explanatory variables since you cannot draw a line in four dimensions.
D. is a function with a slope that is not constant.

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In nonlinear models, the expected change in the dependent variable for a change in one of the explanatory variables is given by

A. △Y = f(X1 + X1, X2,... Xk).
B. △Y = f(X1 + △X1, X2 + △X2,..., Xk+ △Xk)- f(X1, X2,...Xk).
C. △Y = f(X1 + △X1, X2,..., Xk)- f(X1, X2,...Xk).
D. △Y = f(X1 + X1, X2,..., Xk)- f(X1, X2,...Xk).

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제가 입() 옷이 있어요.

A. 을 만한
B. 은 만한
C. 는 만한
D. 만한

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“브랜드”와 비슷한 뜻을 가진 단어는?

A. 상표
B. 물건
C. 상품
D. 가격

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-()가 어떻게 되세요? - 평소에 XL 입어요.

A. 사이즈
B. 브랜드
C. 나이
D. 키

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