12/8/25, 7:57 AM Benchmark 11: Checkpoints 7-8: Attempt review
Introduction to Statistics / Benchmark 11: Checkpoints 7-8 / Benchmark 11: Checkpoints 7-8
Started on Tuesday, November 11, 2025, 6:57 PM
State Finished
Completed on Tuesday, November 11, 2025, 7:00 PM
Time taken 3 mins 32 secs
Grade 40.00 out of 40.00 (100%)
Question 1 Which of the following statements best describes the purpose of the chi-square
Correct goodness-of-fit test?
4.00 points out
of 4.00 Select one:
a. To assess whether there is a linear relationship between two quantitative
variables.
b. To test whether observed frequencies match expected frequencies for a
single categorical variable.
c. To determine if two categorical variables are independent
d. To compare the means of two independent groups.
, 12/8/25, 7:57 AM Benchmark 11: Checkpoints 7-8: Attempt review
Question 2 Which of the following statements best describes the correlation coefficient (r) in linear
Correct regression?
4.00 points out
of 4.00 Select one:
a. It measures the percentage of variance in the dependent variable explained by
the independent variable.
b. It is the total of the squared residuals in the regression model.
c. It indicates the strength and direction of the linear relationship between two
variables.
d. It represents the slope of the regression line.
Question 3
Correct 2
4.00 points out
of 4.00
Select one:
Introduction to Statistics / Benchmark 11: Checkpoints 7-8 / Benchmark 11: Checkpoints 7-8
Started on Tuesday, November 11, 2025, 6:57 PM
State Finished
Completed on Tuesday, November 11, 2025, 7:00 PM
Time taken 3 mins 32 secs
Grade 40.00 out of 40.00 (100%)
Question 1 Which of the following statements best describes the purpose of the chi-square
Correct goodness-of-fit test?
4.00 points out
of 4.00 Select one:
a. To assess whether there is a linear relationship between two quantitative
variables.
b. To test whether observed frequencies match expected frequencies for a
single categorical variable.
c. To determine if two categorical variables are independent
d. To compare the means of two independent groups.
, 12/8/25, 7:57 AM Benchmark 11: Checkpoints 7-8: Attempt review
Question 2 Which of the following statements best describes the correlation coefficient (r) in linear
Correct regression?
4.00 points out
of 4.00 Select one:
a. It measures the percentage of variance in the dependent variable explained by
the independent variable.
b. It is the total of the squared residuals in the regression model.
c. It indicates the strength and direction of the linear relationship between two
variables.
d. It represents the slope of the regression line.
Question 3
Correct 2
4.00 points out
of 4.00
Select one:
