Why is my F statistic so high?
The high F-value graph shows a case where the variability of group means is large relative to the within group variability. In order to reject the null hypothesis that the group means are equal, we need a high F-value.
What does an F value greater than 1 mean?
If the F-score is much greater than one, the variance between is probably the source of most of the variance in the total sample, and the samples probably come from populations with different means.
What does an F value close to 1 mean?
When using a F-test to compare variances, a value of F=1 implies that the two variances are equal.
Is it bad if the F value is low in ANOVA?
No, the model is BAD if the F value is low. It means that the variance explained by the independent variables in the model is low. Thanks for the clear explanation – it’s so hard to find stats and science methods in laymen’s terms!
Can you do one way ANOVA with height?
Let’s talk about a one-way ANOVA for now. You have a continuous, numeric dependent variable – say height. You have a categorical independent variable with two or more levels. You could do ANOVA with just two levels but in that case you might as well do a t-test.
How is the ANOVA table calculated in two way?
The ANOVA table (SS, df, MS, F) in two-way ANOVA. You can interpret the rsults of two-way ANOVA by looking at the P values, and especially at multiple comparisons. Many scientists ignore the ANOVA table. But if you are curious in the details, this page explains how the ANOVA table is calculated.
How are degrees of freedom calculated in one way ANOVA?
In one-way ANOVA, the degrees of freedom for the numerator are for the between group variation and equals (k-1), where k equals the number of factor levels. The design in this blog post has four factor levels, hence the degrees of freedom for the numerator is 4 – 1 = 3.