die mathe: equations

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Statistics

10th

6 Terms

1
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how do you calculate a stratified sample?
(number in category / total) x sample size
2
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capture-recapture
proportion marked in population = proportion marked in sample
3
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working out the mean on a histogram:
mean = [total (freq x midpoint)] / total freq
4
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finding the median from a histogram table thing:
lower bound + (number into category / number in category) x class width
5
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what is the frequency density on a histogram?
height
6
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what is the frequency on a histogram?
area