Deck 11: Describing Associations With Correlation Coefficients

Question 1

Which of the following questions cannot be addressed through the use of a correlation coefficient?

A)Do taller students tend to like science more than shorter students?
B)Do students who read more books tend to be less interested in reading?
C)Do students who like math tend to get better grades?
D)Do students in Ms. Martin's class tend to score higher than students in Ms. Tucker's class the standardized math tests?

Answer 1

Do students in Ms. Martin's class tend to score higher than students in Ms. Tucker's class the standardized math tests?

Question 2

Complete the following sentence with the correct answer. A correlation coefficient:

A)Can range from -1 to +1.
B)Can range from -2 to +2.
C)Can range from -100 to +100.
D)Can be any real (non-imaginary)number.

Answer 2

Can range from -1 to +1.

Question 3

When a correlation coefficient is a negative number,it must be concluded that:

A)The variables will have a negative effect on students.
B)As the one variable increases,the other variable decreases.
C)The variables are weakly correlated.
D)An error was made in computing the number

Answer 3

As the one variable increases,the other variable decreases.