The One way Anova calculates if the mean out of two or more date-set at least one data-set is significant different. The calculation calculates the Anova only from the checked data-sets in the Anova dialogue.
The smaller the p value is the more likely there is a data-set with a significant difference.
Develve uses the commonly accepted value of p < 0.05 for significance.
No significant difference does not mean that the mean of the data-sets are the same!
The result is the minimum sample size for all the data sets.
Total mean of all data
Total amount of data points
Amount of columns (data sets)
Amount of rows (data points of one data set)
data point of row i of data-set of column j
Degrees of freedom
Sum of squares
=Max Mean difference in the group
From the selected data-sets there is at least one data-set that is significant different in mean compared to the other data-sets.
But beware of the difference in variation and one data-set that is not normally distributed.