M

Mr. Dubey • 51.17K Points
Coach

`Q 61. In regression analysis, if the independent variable is measured in kilograms, the dependent variable:`

(A) must also be in kilograms
(B) must be in some unit of weight
(C) cannot be in kilograms
(D) can be any units

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Mr. Dubey • 51.17K Points
Coach

`Q 62. If the coefficient of determination is equal to 1, then the correlation coefficient :`

(A) must also be equal to 1.
(B) can be either -1 or +1.
(C) can be any value between -1 to +1
(D) must be -1

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Mr. Dubey • 51.17K Points
Coach

`Q 63. If two variables, x and y, have a very strong linear relationship, then:`

(A) there is evidence that x causes a change in y
(B) there is evidence that y causes a change in x
(C) there might not be any causal relationship between x and y
(D) None of these alternatives is correct.

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Mr. Dubey • 51.17K Points
Coach

`Q 64. If the coefficient of determination is a positive value, then the regression equation:`

(A) must have a positive slope
(B) must have a negative slope
(C) could have either a positive or a negative slope
(D) must have a positive y intercept

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Mr. Dubey • 51.17K Points
Coach

`Q 65. In regression analysis, the variable that is used to explain the change in the outcome of an experiment, or some natural process, is called:`

(A) the x-variable
(B) the independent variable
(C) the predictor variable
(D) the explanatory variable

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Mr. Dubey • 51.17K Points
Coach

`Q 66. In a regression analysis if r2 = 1, then :`

(A) SSE must also be equal to one
(B) SSE must be equal to zero
(C) SSE can be any positive value
(D) SSE must be negative

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Mr. Dubey • 51.17K Points
Coach

`Q 67. In regression analysis, the variable that is being predicted is the:`

(A) Response, or dependent, variable
(B) Independent variable
(C) intervening variable
(D) is usually x

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Mr. Dubey • 51.17K Points
Coach

`Q 68. In regression, the equation that describes how the response variable (y) is related to the explanatory variable (x) is:`

(A) the correlation model
(B) the regression model
(C) used to compute the correlation coefficient
(D) None of these alternatives is correct.

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Mr. Dubey • 51.17K Points
Coach

`Q 69. If there is a very strong correlation between two variables then the correlation coefficient must be:`

(A) any value larger than 1
(B) much smaller than 0, if the correlation is negative
(C) much larger than 0, regardless of whether the correlation is negative or positive
(D) None of these alternatives is correct

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Mr. Dubey • 51.17K Points
Coach

`Q 70. The correlation coefficient is used to determine:`

(A) A specific value of the y-variable given a specific value of the x-variable
(B) A specific value of the x-variable given a specific value of the y-variable
(C) The strength of the relationship between the x and y variables
(D) None of these

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