Question 1

A scatter diagram shows a pattern of dots in which the dots generally go up and to the right. This pattern is an example of a(n)__________ correlation.

Accepted Answer

The answer of A scatter diagram shows a pattern of...

Question 2

A scatter diagram shows the relation between hearing sensitivity and love of music (you are predicting love of music from hearing sensitivity). A dot located at 4.5 across and 8 up means the person had a score of 4.5 on __________.

Accepted Answer

The answer of A scatter diagram shows the relation between...

Question 3

In a scatter diagram, the predictor variable goes on the __________ axis.

Accepted Answer

The answer of In a scatter diagram, the predictor variable...

Question 4

A(n)__________ is a table showing the correlations among several variables.

Accepted Answer

The answer of A(n)__________ is a table showing the correlations...

Question 5

A scatter diagram shows a pattern of dots in which the dots generally go down and to the right. This pattern is an example of a(n)__________ correlation.

Accepted Answer

The answer of A scatter diagram shows a pattern of...

Question 6

A study finds that the scarier the movie a person is watching, the more popcorn the person will eat. This relation between scariness of movies and popcorn is an example of a(n)__________ correlation.

Accepted Answer

The answer of A study finds that the scarier the...

Question 7

A research article reports that a score is statistically significant. This means that it is unlikely that a correlation this high would have been observed in the group studied if the correlation were in fact zero for __________.

Accepted Answer

The answer of A research article reports that a score...

Question 8

A(n)__________ is a graphic display of the pattern of relationship between two variables.

Accepted Answer

The answer of A(n)__________ is a graphic display of the...

Question 9

It is impossible for two variables to be essentially unrelated to each other. (True or False)

Accepted Answer

Two variables can be essentially unrelated or have a very weak relationship, which is known as a low correlation coefficient. However, it is not impossible for them to be unrelated, as there could still be other factors or variables at play that affect both variables independently.

Question 10

When using Z scores, the cross-product of a high score with a high score will always be __________.

Accepted Answer

The answer of When using Z scores, the cross-product of...

Question 11

A perfect linear correlation means that all the dots fall exactly on the straight line. (True or False)

Accepted Answer

A perfect linear correlation means that all the data points fall exactly on the straight line, resulting in a correlation coefficient of either 1 or -1.

Question 12

If the true pattern of association between variables is curvilinear, figuring the correlation in the usual way could result in little or no correlation. (True or False)

Accepted Answer

When the true relationship between variables is curvilinear, linear correlation measures (like Pearson's correlation coefficient) may fail to detect the relationship, resulting in a low correlation coefficient despite a strong curvilinear association.

Question 13

Multiplying a person's Z score on one variable by the person's Z score on another variable creates what is called a(n)__________ of Z scores.

Accepted Answer

The answer of Multiplying a person's Z score on one...

Question 14

When a research article reports r = .35, p < .05, the "p < .05" means that the result is statistically __________.

Accepted Answer

The answer of When a research article reports r =...

Question 15

In a perfect linear correlation, the dots in a scatter diagram all fall __________.

Accepted Answer

The answer of In a perfect linear correlation, the dots...

Question 16

A scatter diagram shows a pattern in which the dots go roughly straight across and then about halfway across start going down. This is an example of a(n)__________ correlation.

Accepted Answer

The answer of A scatter diagram shows a pattern in...

Question 17

A scatter diagram in which the dots form a kind of upside-down "U" shape is an example of a(n)__________ correlation.

Accepted Answer

The answer of A scatter diagram in which the dots...

Question 18

When high scores go with high scores, and low with low, the correlation coefficient will be between _________ and __________.

Accepted Answer

The answer of When high scores go with high scores,...

Question 19

A study finds that the longer a book, the less willing children are to read it. This relation between book length and children's interest is an example of a(n)__________ correlation.

Accepted Answer

The answer of A study finds that the longer a...

Question 20

When using Z scores, the cross-product of a high score with a low score will always be __________.

Accepted Answer