Total Activity Time (Hours:Min:Seconds) Exam 1 Grade (%) Extra Credit Opportunity
24:06:44 70
4:54:34 65
1:32:58 90
1:21:27 80
1:12:58 70
11:53:13 85
98:32:08 90
5:30:49 55
23:42:30 83
1:58:29 60
8:03:26 90
23:53 80
1:07:09 85
13:11:18 90
- Create a scatterplot for the data listed above.
- Describe the shape and direction of the plot.
- Calculate the correlation coefficient.
- Calculate the linear regression line.
- Based on the linear regression line, what should a student score on the exam if they spent 30 hours in the homework platform?
- Based on this relationship, what can you conclude about the relationship between homework and exam grades?
- Are there any other factors that might influence the relationship between homework and exam grades? If so list 2.
Sample Solution