In: Statistics and Probability
Using the accompanying Student Grades data, construct a scatter chart for midterm versus final exam grades and add a linear trendline. What is the model? If a student scores 70 on the midterm, what would you predict her grade on the final exam to be?
Student |
Midterm |
Final Exam |
|
---|---|---|---|
1 |
7575 |
6464 |
|
2 |
8585 |
9090 |
|
3 |
8080 |
6969 |
|
4 |
8989 |
8484 |
|
5 |
7676 |
6161 |
|
6 |
6666 |
7878 |
|
7 |
7878 |
7272 |
|
8 |
9494 |
9494 |
|
9 |
6767 |
5959 |
|
10 |
9393 |
8686 |
|
11 |
7979 |
5353 |
|
12 |
8787 |
8484 |
|
13 |
8686 |
5555 |
|
14 |
6262 |
7373 |
|
15 |
9191 |
8686 |
|
16 |
7575 |
8888 |
|
17 |
6969 |
8181 |
|
18 |
9393 |
9595 |
|
19 |
7979 |
7878 |
|
20 |
6161 |
7070 |
|
21 |
6969 |
8383 |
|
22 |
7272 |
7373 |
|
23 |
6262 |
7474 |
|
24 |
6969 |
5555 |
|
25 |
7575 |
9494 |
|
26 |
7171 |
7878 |
|
27 |
9898 |
8989 |
|
28 |
5959 |
5353 |
|
29 |
8383 |
7777 |
|
30 |
7171 |
8181 |
|
31 |
7676 |
6969 |
|
32 |
9595 |
9797 |
|
33 |
7373 |
9292 |
|
34 |
7171 |
8080 |
|
35 |
7373 |
8282 |
|
36 |
9696 |
9595 |
|
37 |
7171 |
6262 |
|
38 |
9090 |
8383 |
|
39 |
9595 |
9696 |
|
40 |
8484 |
8888 |
|
41 |
6161 |
7373 |
|
42 |
6565 |
9393 |
|
43 |
9595 |
8383 |
|
44 |
8282 |
8888 |
|
45 |
8888 |
100100 |
|
46 |
9393 |
9696 |
|
47 |
7777 |
9191 |
|
48 |
8686 |
9393 |
|
49 |
9191 |
7878 |
|
50 |
7575 |
8383 |
|
51 |
9696 |
100100 |
|
52 |
7979 |
7272 |
|
53 |
6161 |
7878 |
|
54 |
6969 |
7676 |
|
55 |
8686 |
9191 |
|
56 |
8989 |
9494 |
|
Student |
Midterm |
Final Exam |