F-test and t-Test !!!!!!

2012-11-25 6:24 am
PLEASE HELP!!!!!!!

Q1)
F test result as below, is the variance of teh 2 samples are Unequal????
F-Test Two-Sample for Variances

Variable 1 Variable 2
Mean3.0711002481.64219428
Variance49.123883682.004214993
Observations3019
df2918
F24.51028649
P(F<=f) one-tail1.61594E-09
F Critical one-tail2.113106597

Q2)
P value is larger than STATISTICAL SIGNIFICANCE, so??
Do I need to determine to use 1 tail test or 2tail test????
T-test result as below, what conclusion I can make????


t-Test: Two-Sample Assuming Unequal Variances

Variable 1 Variable 2
Mean3.0711002481.64219428
Variance49.123883682.004214993
Observations3019
Hypothesized Mean Difference0
df33
t Stat1.082334398
P(T<=t) one-tail0.143474817
t Critical one-tail1.692360258
P(T<=t) two-tail0.286949635
t Critical two-tail2.034515287

回答 (1)

2012-11-25 7:52 pm
✔ 最佳答案
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