This question is answered but can you complete the following: Five hundred stude
ID: 3257646 • Letter: T
Question
This question is answered but can you complete the following: Five hundred students completed the “Census at School” survey. Each was asked how many hours per week they spent doing homework. A researcher uses a quasi-experimental design to compare the average time spent doing homework per week to high school students in different grades. The research question is, “Do students in different grades of high school spent significantly different amounts of time doing homework per week?” Five students were randomly selected from each grade; the data is presented below. Calculate the measure of association R ^2: Calculate the measure of association ^2:
Grade
9
10
11
12
Hours Spent Doing Homework
3
2
1
5
5
2
1
5
2
4
10
4
3
10
2
19
10
12
5
7
Grade
9
10
11
12
Hours Spent Doing Homework
3
2
1
5
5
2
1
5
2
4
10
4
3
10
2
19
10
12
5
7
Explanation / Answer
Answer:
This question is answered but can you complete the following: Five hundred students completed the “Census at School” survey. Each was asked how many hours per week they spent doing homework. A researcher uses a quasi-experimental design to compare the average time spent doing homework per week to high school students in different grades. The research question is, “Do students in different grades of high school spent significantly different amounts of time doing homework per week?” Five students were randomly selected from each grade; the data is presented below.
Calculate the measure of association R ^2: 0.489
Calculate the measure of association ^2: 0.489
Grade
9
10
11
12
Hours Spent Doing Homework
3
2
1
5
5
2
1
5
2
4
10
4
3
10
2
19
10
12
5
7
Spss used;
SPSS output
Descriptive Statistics
Dependent Variable: time
grade
Mean
Std. Deviation
N
9.00
3.2000
1.78885
5
10.00
2.8000
1.64317
5
11.00
5.8000
3.89872
5
12.00
10.6000
5.41295
5
Total
5.6000
4.55839
20
Tests of Between-Subjects Effects
Dependent Variable: time
Source
Type III Sum of Squares
df
Mean Square
F
Sig.
Partial Eta Squared
Noncent. Parameter
Observed Powerb
Corrected Model
193.200a
3
64.400
5.111
.011
.489
15.333
.839
Intercept
627.200
1
627.200
49.778
.000
.757
49.778
1.000
grade
193.200
3
64.400
5.111
.011
.489
15.333
.839
Error
201.600
16
12.600
Total
1022.000
20
Corrected Total
394.800
19
a. R Squared = .489 (Adjusted R Squared = .394)
b. Computed using alpha = .05
Grade
9
10
11
12
Hours Spent Doing Homework
3
2
1
5
5
2
1
5
2
4
10
4
3
10
2
19
10
12
5
7
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