analyzing with ANOVA, Psychology homework help
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Assignment 2: Analyzing with ANOVA
Submit your answers to the following questions using the
ANOVA source table below. The table depicts a two-way ANOVA in which
gender has two groups (male and female), marital status has three
groups (married, single never married, divorced), and the means refer
to happiness scores (n = 100):
- What are the independent variables and their levels? What is the dependent variable?
- State all null hypotheses associated with independent variables and their interaction? Also suggest alternate hypotheses?
- What are the degrees of freedom for 1) gender, 2)
marital status, 3) interaction between gender and marital status, and
4) error or within variance? - Calculate the mean square for 1) gender, 2) marital
status, 3) interaction between gender and marital status, and 4) error
or within variance. - Calculate the F ratio for 1) gender, 2) marital status, and 3) interaction between gender and marital status.
- Identify the critical Fs at alpha = .05 for 1) gender, 2) marital status, and 3) interaction between gender and marital status.
- If alpha is set at .05, what conclusions can you make?
| Source | Sum of Squares | (degrees of freedom [df]) | Mean Square | Fobt. | Fcrit. |
| Gender | 68.15 | ? | ? | ? | ? |
| Marital Status | 127.37 | ? | ? | ? | ? |
| Gender * Marital Status (A x B) | 41.90 | ? | ? | ? | ? |
| Error (Within) | 864.82 | ? | ? | NA | NA |
| Total | 1102.24 | 99 | NA | NA | NA |
Please Note: The table that you see in
the assignment has been slightly modified from the one presented in the
module notes since it is beyond the scope of this unit to have students
calculate p values. Instead you are asked to calculate the F value and
compare it to the critical F value to determine whether the test is
significant or not.
By Wednesday, July 19, 2017, deliver your assignment to the M4: Assignment 2 Dropbox.
Assignment 2 Grading Criteria
Maximum Points
Correctly identified the independent and dependent variables.
4
Provided appropriate null and alternative hypotheses.
8
Correctly identified the
degrees of freedom for 1) gender, 2) marital status, 3) interaction
between gender and marital status, and 4) error or within variance.
8
Correctly calculated the
mean square for 1) gender, 2) marital status, 3) interaction between
gender and marital status, and 4) error or within variance.
20
Correctly calculated the F ratio for 1) gender, 2) marital status, and 3) interaction between gender and marital status.
16
Correctly identified the
critical Fs at alpha = .05 for 1) gender, 2) marital status, and 3)
interaction between gender and marital status.
16
Provided the correct conclusion based on alpha = .05.
8
Wrote in a clear,
concise, and organized manner; demonstrated ethical scholarship in
accurate representation and attribution of sources; displayed accurate
spelling, grammar, and punctuation.
20
Total:
100
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