this question is from Analysis Of Variance in statistics..please help me..thank you?
In order to aim advertising dollars, a survey is done of 5 flavours of can pop to determine whether different ages prefer different flavours. The ages of 4 people preferring each flavour were recorded. An ANOVA analysis was done to determine whether there is a difference in mean ages, resulting in F =3.4.
df numerator =
df denominator =
- 1 decade agoFavorite Answer
DFn=k-1 where k is the number of groups
DFd=N-k where N is the total sample size
DFn=4 - 1 = 3
DFd= 20 - 4 = 16
- fleuryLv 43 years ago
once you're evaluating 3 or greater inhabitants ability.. to furnish you an occasion: > Say you amassed a random pattern of the GPAs of sophomores, juniors and seniors in extreme college (so which you have 3 populations), and you needed to work out if the traditional GPA became the comparable for all grade ranges. you will do an F-attempt to attempt the null hypothesis that all and sundry 3 populations have the comparable GPA typical. desire that's clever:-)