Regression Analysis
Interactive practice questions
Consider the graph on the right.
Loading Graph...
a
Would calculating the correlation coefficient be appropriate for this data set?
Yes
A
No
B
b
Why would it not be suitable to calculate the correlation coefficient?
Select all statements that apply.
The relationship graphed is not linear.
A
The outlier will bias the result.
B
There are not enough values given.
C
Easy
< 1min
Consider the graph on the right.
Easy
< 1min
Data on colony collapse disorder is collected across several years.
Easy
5min
A researcher plotted the life expectancy of a group of men against the number of cigarettes they smoke a day. The results were recorded and the correlation coefficient $r$r was found to be $-0.88$−0.88.
Easy
< 1min
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