id
textbook
score
nonpoor
1
0
32.34748
0
1
2
1
60.6767
0
3
0
36.8199
0
4
1
59.97848
0
5
1
94.84734
1
6
1
67.58567
1
7
1
89.47661
1
8
0
27.36664
0
9
0
26.91632
0
10
1
60.6944
0
11
0
34.57623
0
12
1
72.79
1
13
1
72.19371
1
14
0
16.21021
0
15
0
3.566154
0
16
0
20.01606
0
17
1
75.53525
1
18
1
68.07047
1
It is not that hard to see the difference between the test scores from the students with and without
19
0
24.23458
0
textbook. The average of test score of students without textbook (indicator: 0) are high much lower
20
0
39.00613
0
than the ones who have textbook(indicator: 1).
21
1
80.59294
1
22
1
80.25801
1
23
1
86.35025
1
2 67.6061098361 is the average score among students who have textbooks.
24
1
73.95139
1
25
0
36.00045
0
30.7554559231 is the average score among students who do not have textbooks.
26
0
49.77136
0
27
1
77.16637
1
Based solely on these two numbers of the average scores from students with and without textbooks,
28
1
75.59013
1
we can conclude that the students with textbook have an average higher test score. Thus, textbooks
29
0
40.46128
0
have positive relation with test scores.
30
1
64.3642
1
31
1
54.13269
1
3
0.0146456517 0.169651821
#N/A
#N/A
#N/A
#N/A
32
1
75.81052
1
0.0013662757 0.0800465985
#N/A
#N/A
#N/A
#N/A
33
1
83.76164
1
0.5397018438 0.3342749256
#N/A
#N/A
#N/A
#N/A
34
0
11.90193
0
35
0
35.86093
0
36
1
65.15588
1
36.850653913 30.755455923
#N/A
#N/A
#N/A
#N/A
37
0
28.57663
0
3.4377542502 2.6849719019
#N/A
#N/A
#N/A
#N/A
38
1
10.0087
0
0.5397018438 16.767644153
#N/A
#N/A
#N/A
#N/A
39
1
107.5995
1
40
0
32.04168
0
What is your estimate of the impact of textbooks on scores? Report the Excel
41
1
90.80514
1
output, including the standard errors. How does this coefficient estimate compare to your
42
1
84.13176
1
answer to Question 2? What is the tstatistic associated with the coecient on textbook
43
1
29.6261
0
ownership? Can you reject the hypothesis that textbooks are unrelated to test scores? At
44
1
62.4787
1
what level of statistical significance?
45
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 Fall '11
 jakiela

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