Two way ANOVA


In statistics, the two-way analysis of variance is an extension of the one way  ANOVA, which examines the influence of two distinctly independent variables on the one hand. The purpose of the two-way ANOVA is not only to examine the main effect of each independent variable, but also if there is an interaction between them.

SPSS presentation of Two way ANOVA

STEP 1 Open SPSS sheet having data on which the research is conducted, DATA entry 




STEP # 02: Click analyze on the tool bar, select General Linear Model, and click on Univariant.

            Analyze > General Linear Model > Univariant.


STEP # 03 

     Univariate add variables to the list


Highlight the dependent variable (self-esteem) in the left box and click the arrow to move this variable to the left of the dependent variable and the independent variable (gender and profession) and move the variable to the Fixed Factor box. Click the arrows to move.



ü  STEP 4 click on plots
Transfer the independent variable (gender), from the factor box into the horizontal Axis box and other independent variable (occupation) into separate line box. Then click on the add, we will see gender* occupation. Now click continue.


STEP 5 post Hoc

Click on the Post Hoc , Now transfers the variables from factor box to Post Hoc Test box. Then click on the Tukey and then click on continue.


STEP 6 click on option

Transfers the variables into display mean for box, Then click on descriptive statistics. Now click continue




STEP 7 click OK


 


TABLES
Descriptive Statistics
Dependent Variable:   self-esteem total 
Gender
Occupation
Mean
Std. Deviation
N
Female
Student
24.6623
4.12824
77
Businessman
26.2222
3.99346
18
Employee
24.0833
5.48483
12
Housewife
22.6552
3.93043
29
Artist
22.0000
.00000
2
Teacher
22.0000
2.00000
6
Total
24.2569
4.22074
144
Male
Student
23.6512
4.56783
86
Businessman
24.9762
3.65252
42
Employee
24.8889
3.48010
9
Housewife
26.1667
4.53505
6
Teacher
23.5000
5.19615
4
Shopkeeper
23.1429
3.02372
7
Doctor
18.0000
.00000
2
Total
24.0769
4.26469
156
Total
Student
24.1288
4.38171
163
Businessman
25.3500
3.76795
60
Employee
24.4286
4.64297
21
Housewife
23.2571
4.18922
35
Artist
22.0000
.00000
2
Teacher
22.6000
3.43835
10
Shopkeeper
23.1429
3.02372
7
Doctor
18.0000
.00000
2
Total
24.1633
4.23751
300



 
Tests of Between-Subjects Effects
Dependent Variable:   self-esteem total 
Source
Type III Sum of Squares
Df
Mean Square
F
Sig.
Corrected Model
363.106a
12
30.259
1.735
.059
Intercept
32907.194
1
32907.194
1886.650
.000
Gender
13.831
1
13.831
.793
.374
Occupation
227.169
7
32.453
1.861
.076
gender * occupation
115.969
4
28.992
1.662
.159
Error
5005.891
287
17.442


Total
180529.000
300



Corrected Total
5368.997
299



a. R Squared = .068 (Adjusted R Squared = .029)



CONCLUSIONS
After performing these steps you will have tables about two way ANOVA that are further used for discussion of results.

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