You decided to conduct Bonferroni post hoc analyses in MS Excel. Inspect the MS Excel output and answer these questions. a) Were these poc hoc analyses conducted assuming equal variances? b) What is the directionality for each comparison? c) What is the new alpha level that you need to use to determine significance?
You decided to conduct Bonferroni post hoc analyses in MS Excel. Inspect the MS Excel output and answer these questions. a) Were these poc hoc analyses conducted assuming equal variances? b) What is the directionality for each comparison? c) What is the new alpha level that you need to use to determine significance?
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:You decided to conduct Bonferroni post hoc analyses in MS Excel. Inspect the MS Excel output and answer these questions.
a) Were these poc học analyses conducted assuming equal variances?
b) What is the directionality for each comparison?
c) What is the new alpha level that you need to use to determine significance?
d) What conclusions can you make regarding birth order and Peabody Picture Vocabulary Test scores for these Grade 2 students?
Oldest Child Middle Child
Oldest Child Youngest Child
Middle Child Youngest Child
Mean
94.75
68.375
Mean
94.75
95 Mean
68.375
95
Variance
60.21428571 41.98214286
Variance
60.21428571
127.5
Variance
41.98214286
127.5
Observations
8.
Observations
8
Observations
8
Pooled Variance
51.09821429
Pooled Variance
96.1
Pooled Variance
87.59166667
Hypothesized Mean Difference
Hypothesized Mean Difference
Hypothesized Mean Difference
df
14
df
15
df
15
t Stat
P(T<=t) one-tail
t Critical one-tail
t Stat
P(T<=t) one-tail
7.37937537
t Stat
-0.052483175
-5.854637484
P(T<=t) one-tail
t Critical one-tail
1.73015E-06
0.479418139
1.58385E-05
1.761310136
1.753050356
t Critical one-tail
1.753050356
P(T<=t) two-tail
3.4603E-06
P(T<=t) two-tail
0.958836278
P(T<=t) two-tail
3.16769E-05
t Critical two-tail
2.144786688
t Critical two-tail
2.131449546
t Critical two-tail
2.131449546
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