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Statistical R-Team and Needle Exchange Examination MCQ

The R2 is the squared correlation of which two values?

Y and the predicted values of y

Y and each continuous x

B and t

B and se

Answer

Correct Answer: Y and the predicted values of y

Note: This Question is unanswered, help us to find answer for this one

Significance for the coefficients (b) is determined by

An F-test.

An R2 test.

A correlation coefficient.

A t-test.

Answer

Correct Answer: A t-test.

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Which of the following is true about the adjusted R2?

It is usually larger than the R2

It is only used when there is just one predictor

It is usually smaller than the R2

It is used to determine whether residuals are normally distributed

Answer

Correct Answer: It is usually smaller than the R2

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Continuous predictors influence the of the regression line, while categorical predictors influence the _______.

Slope, intercept

Intercept, slope

R2, p-value

P-value, R2

Answer

Correct Answer: Slope, intercept

Note: This Question is unanswered, help us to find answer for this one

Which of the following is not an assumption for simple linear regression?

Normally distributed variables

Multicollinearity

Linear relationship

Constant variance

Normally distributed residuals

Answer

Correct Answer: Multicollinearity

Note: This Question is unanswered, help us to find answer for this one

Statistical R-Team and Needle Exchange Examination MCQ

The R2 is the squared correlation of which two values?

Significance for the coefficients (b) is determined by

Which of the following is true about the adjusted R2?

Continuous predictors influence the ______ of the regression line, while categorical predictors influence the _____________.

Which of the following is not an assumption for simple linear regression?

Continuous predictors influence the of the regression line, while categorical predictors influence the _______.