chapter7 - 8.docx - Question 1 1 out of 1 points A...

 Question 1
1 out of 1 points
A scatterplot shows:
Answers:
Scores on one variable plotted against scores on a second
variable.
The frequency with which values appear in the data.
The average value of groups of data.
The proportion of data falling into different categories.
 Question 2
1 out of 1 points
Which of the following statements about Pearson's correlation coefficient is not true?
 Question 3
1 out of 1 points
When interpreting a correlation coefficient, it is important to look at:
 Question 4
1 out of 1 points
The correlation between two variables A and B is .12 with a significance of p < .01.
What can we conclude?
 Question 5
1 out of 1 points
The relationship between two variables partialling out the effect that a third variable

has on one of those variables can be expressed using a:
Answer
s:
Bivariate correlation
Semi-partial correlation
Point-biserial correlation
Partial correlation
 Question 6
1 out of 1 points
Imagine a researcher wanted to investigate whether there was a significant
correlation between IQ and annual income, but she had reason to believe that work
ethic would influence both of these variables. What should she do?
 Question 7
1 out of 1 points
A correlation of .5 would produce a scatterplot in which the slope: