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You now have the building blocks to compute an F test of ANOVA.
So here are the computational steps. First you compute variance between groups.
You've done that with your lemonade stand data.
You have that on your walls, so you can refer to it.
Yes? Yes. If not, if you've been slacking, fix it.
Get all of it up on the wall. You're gonna need it now.
And you've also computed your variance within groups.
And you have that in a separate place on the wall.
The next step is to compute what we call F obtained.
We also sometimes call it F observed. There's the formula for it.
You're gonna take that variance between groups, and divide it by the variance within groups.
Go ahead now with the lemonade stand data that you've been working with now for days
and days. And compute your F obtained.