Finding F critical for Variances Use the F-distribution to find the degrees of freedon for the numerator (d.f.N.), the degrees of freedom for the Denominator (d.f.D.) and the critical F-value Use the...
Finding F critical for Variances
Use the F-distribution to find the degrees of freedon for the numerator (d.f.N.), the degrees of freedom for the Denominator (d.f.D.) and the critical F-value
Use the closest value when looking up the d.f.N. and d.f.D. in the tables.
| Test |
alpha α |
Sample 1 | Sample 2 |
d.f.N. |
d.f.D. |
F critical |
| Right | 0.01 |
s12=37 n1=14 |
s22=89 n2=25 |
|||
| Two-tailed | 0.10 |
s12=164 n1=21 |
s22=53 n2=17 |
|||
| Right | 0.05 |
s12=92.8 n1=11 |
s22=43.6 n2=11 |
Homework Answers
| Test | alpha | Sample 1 | Sample 2 | d.f.N. | d.f.D. | F critical |
| α | ||||||
| Right | 0.01 | s12=37 | s22=89 | 24 | 13 | 3.587 |
| n1=14 | n2=25 | |||||
| Two-tailed | 0.1 | s12=164 | s22=53 | 20 | 16 | 2.276 |
| n1=21 | n2=17 | |||||
| Right | 0.05 | s12=92.8 | s22=43.6 | 10 | 10 | 2.978 |
| n1=11 | n2=11 |
Add Answer to:
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