#prob

16 messages · Page 1 of 1 (latest)

dusky furnace
stoic lodgeBOT
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dusky furnace
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why is the standard deviation not 80

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for b

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cause its linear combinations not sample mean

graceful turtle
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i- yeah what the fuck

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idk

patent crystal
graceful turtle
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um no

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ur doing total weight not average

patent crystal
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That’s why the mean weight is multiplied for each apple sampled.

patent crystal
# graceful turtle ur doing total weight not average

I have to admit that upon closer inspection I see what you mean. The variance should increase from that of apples if we are talking about bags of apples, and daania’s equation should give the variance he/she was looking for. The variance within a bag should be smaller the more we sample, but the variance across bags is another matter.

golden notch
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is it possible that the answers are incorrect?

dusky furnace
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Yep