Statistics: large data set
18
Hi, can someone explain why the answer is mean daily rainfall? Given the mean and SD the variable can take negative values, but how is this possible for rainfall?
Reply 1
21
Original post
by subbhyHi, can someone explain why the answer is mean daily rainfall? Given the mean and SD the variable can take negative values, but how is this possible for rainfall?
The distribution isnt normal. So I guess in perth, you have large storms/busts of rain which cause it to have a long tail and a large standard deviation. THere will proboably be many days when the rainfall is zero.
Reply 2
subbhy
OP
18
Original post
by mqb2766The distribution isnt normal. So I guess in perth, you have large storms/busts of rain which cause it to have a long tail and a large standard deviation. THere will proboably be many days when the rainfall is zero.
Right, but why does that mean it can be negative?
Reply 3
21
Original post
by subbhyRight, but why does that mean it can be negative?
It doesnt mean anything as rainfall cant be negative. Most distributions have a mean and standard deviation, but it doesnt mean that you interpret them as you would do for a normal distribution.
Reply 4
subbhy
OP
18
Original post
by mqb2766It doesnt mean anything as rainfall cant be negative. Most distributions have a mean and standard deviation, but it doesnt mean that you interpret them as you would do for a normal distribution.
Okay thanks
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