Question

I mentioned the fact that variability is a concept that will run throughout the book. I said that you need only one cow to find out how many legs cows have, whereas you need many more to estimate their average milk production. How would you expect that variability would contribute to the size of the sample you would need? What would you have to do if you suspected that some varieties of cows gave relatively little milk, while other varieties gave quite a lot of milk?


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  • CreatedSeptember 22, 2015
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