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Writing Up An ANOVA Analysis
James Neill
Centre for Applied Psychology
University of Canberra
30 March, 200
Creative Commons Attrib!tion 2"# A!stralia
http$%%creativecommons"org%licenses%by%2"#%a!%
Table of Contents
C&'C()*+
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""Abo!t"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
heoretical
!nderpinning$"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""Ass!mptions"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""-escriptive
+tatistics""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
ype of AN./A$
""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""+AMP)'
AN./A 1* '
UP""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
*ntrod!ction""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""1es!lts"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""-isc!ssion""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
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CHECKLIST
Abo!t
An acceptable AN./A for the p!rposes of yo!r lab report is one
6hich$
As7s an interesting, logically derived 8!estion and%or
hypothesis9es:9*ntrod!ction:;
Cond!cts any necessary recoding and reports on ho6 6ell the data
meets theass!mptions of the AN./A 91es!lts:;
Presents descriptive statistics 91es!lts:;
Applies an appropriate type of advanced AN./A to the variables
being
e
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ype of AN./A$
+tate 6hat type of AN./A is !sed and clearly indicate and e
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SAMPLE ANOVA W ITE!UP
-oes Children@s Academic 'nglish and Maths Performance
-iffer Across ender and +ocio economic +tat!sB
Note " his sample 6rite !p provides a non e
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he interaction bet6een +'+ and types of academic achievement 6as
significant !singa critical alpha of "0# 9 F 95, 5#E: F 5 "4G, p F
"00, 2 F "0G:" his 6as a strong effect"'
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able 5
Descriptive statistics for childrens academic performance in
Maths and English for lowand high socioeconomic status
+'+
Academic Achievement )o6 &igh otal
M 9SD: M 9SD: M 9SD:
Maths E3"5 95 "0: 42"# 950"5: E "# 952" :
'nglish EG"2 953"2: EE"# 95#"E: E4"E 95 "4:
otal EE"5 9G"0: EG" 9G"2: E "5 9G"2:
N E4 G5 5#
"#
$%
$&
$'
$$
$#
(%
(&
('
Lo) SES Hig* SES
Mat*s
Englis*
Figure 1. Mean Maths achievement and 'nglish achievement for lo6
and high +'+st!dents"
E
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-isc!ssion
+'+ interacts 6ith type of academic performance" h!s, there 6as
nosignificant differences for 'nglish performance bet6een high and
lo6 +'+
st!dents, b!t high +'+ st!dents performed better, on average,
than lo6 +'+st!dents for Maths"
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