Jamovi HW8
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School
University of Oregon *
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Course
302
Subject
Mathematics
Date
Apr 3, 2024
Type
docx
Pages
3
Uploaded by DeaconMeerkat3634
Jamovi Homework 8
23 points
Mathematics word problems can be particularly difficult, especially for
primary-grade children. A recent study investigated a combination of
techniques for teaching students to master these problems (Fuchs,
Fuchs, Craddock, Hollenbeck, Hamlett, & Schatschneider, 2008). The
study investigated the effectiveness of instruction type, where
traditional math instruction was compared to a new technique called
hot math that teaches students to recognize types or categories of
problems so they can generalize skills from one problem to another (1
= traditional, 2 = hot math). They also offered this instruction either in
private tutoring sessions to half of the students or in a classic
classroom setting to the other half of students (1 = untutored, 2 =
tutored). The following data were obtained. The dependent variable is
a math test score for each student after 16 weeks in the study. Check your data entry carefully! It is easy to lose almost all the points on
this homework assignment if you mistype a number – as many
subsequent statistics and analyses will be incorrect!
Output (7 points)
1) Conduct the appropriate statistical test, and then paste the following
output: (4 points)
Three
descriptive statistics tables showing the means and
standard deviations for each level of instruction, each level of
help, and the cell means for each combination of conditions
The inferential results table of the factorial ANOAVA
Descriptives
instructi
on
test_sco
re
N
1
18
2
18
Mean
1
4.11
2
6.61
Median
1
5.00
2
7.00
Standard deviation
1
2.25
2
1.97
Help
Untutored
Tutored
Instructio
n
Traditional
2
6
5
3
5
7
1
5
0
7
4
5
5
1
5
7
1
5
Hot Math
4
8
4
4
7
8
9
11
7
6
7
5
5
7
4
7
8
8
Descriptives
hel
p
test_scor
e
N
1
18
2
18
Mean
1
4.61
2
6.11
Median
1
5.00
2
6.50
Standard deviation
1
2.48
2
2.22
ANOVA - test_score
Sum of
Squares
df
Mean
Square
F
p
η²p
help
20.25
1
20.25
5.00
0.032
0.1
4
instruction
56.25
1
56.25
13.8
9
< .00
1
0.3
0
help ✻ instruction
2.25
1
2.25
0.56
0.461
0.0
2
Residuals
129.56
3
2
4.05
2) Paste three
appropriate graphs from jamovi displaying how the overall means of each level of instruction compare, how the overall means of each level of help compare, and a graph displaying the interaction effect (3 points)
Non-APA portion (4.5 points)
3) For each of the THREE
null hypotheses, do the following:
●
State the null hypotheses (in plain language) (0.5 points each)
●
State your decision about each of the null hypotheses (0.5 points each)
●
State the rationale for your decision about each of the null hypotheses (0.5 points each)
APA portion (11.5 points)
4) Write an APA style report of your findings. Your report should include each of the following, with no errors of APA style or formatting. Round all statistics to two decimals (except p
-values, which are reported to three decimal places).
State the type of statistical analysis used (0.5 point)
Report descriptive statistics for each level of instruction and each level of help (1 point each)
Report the values of three
test statistics with their degrees of freedom (0.5 points each)
Report the values of three
precise p
-values to three decimals (unless jamovi reports p
= .000, in which case you use p
< .001) (0.5 points each)
Report a measure of effect size (partial eta-squared) for each test (0.5 points each)
Report whether each effect was significant or non-significant (0.5 points each)
Describe the direction of each main effect (0.5 points each)
Describe the nature of a significant interaction effect or if the interaction effect is not significant, describe what it means that there is no significant interaction (1 point)
Correct APA style formatting (1 point)
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