Question

Question 1- Choose the best option

I-When calculating an F ratio for an ANOVA test, what is the general pattern?

a. There is no relationship between F ratio and p-value

b. F ratio equal the p-value

c. F ratio is always greater than the p-value

d. In general, the smaller the F ratio the smaller the p-value.

e. In general, the larger the F ratio the smaller the p-value.

II-Which of the following tools is not appropriate for studying the relationship between two numerical variables?

a. Correlation coefficient

b. None of the above.

c. Regression

d. Scatter plot

e. Histogram

III-Which of the following cannot be answered from a linear regression equation?

a. Predict the value of Y at a particular value of X

b. Estimate the slope coefficient between X and Y

c. Estimate whether the linear relationship between X and Y is positive or negative

d. Estimate whether the relationship between X and Y is linear or non-linear.

e. None of the above.

IV-Which of the following cannot be used to assess the goodness of fit of a regression model?

a. R-squared

b. Residual plots

c. F-test (ANOVA)

d. Chi-square test

e. Standard error of estimate

Answer 1

I-When calculating an F ratio for an ANOVA test, what is the general pattern?

in general, the larger the F ratio the smaller the p-value.

II-Which of the following tools is not appropriate for studying the relationship between two numerical variables?

Histogram

III-Which of the following cannot be answered from a linear regression equation?

Estimate whether the relationship between X and Y is linear or non-linear.

IV-Which of the following cannot be used to assess the goodness of fit of a regression model?

Chi-square test