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Mathematics 14 Online
OpenStudy (rayep12):

You have found the following ages (in years) of 4 zebras. Those zebras were randomly selected from the 45 zebras at your local zoo: 14, 15, 9, 1 Based on your sample, what is the average age of the zebras? What is the standard deviation? Round your answers to the nearest tenth.

OpenStudy (rayep12):

Average age____ Standard deviation_____

OpenStudy (partyshotz2409):

do you know how to find the average or in other words mean

OpenStudy (rayep12):

yeah

OpenStudy (partyshotz2409):

ok so find the average if this numbers

OpenStudy (partyshotz2409):

14+15+ 9+ 1 = what

OpenStudy (partyshotz2409):

29

OpenStudy (partyshotz2409):

so 29/4

OpenStudy (partyshotz2409):

which is 7.25

OpenStudy (partyshotz2409):

now we have to find the deviation

OpenStudy (rayep12):

lol okay

OpenStudy (partyshotz2409):

6.75, 7.75, 1.75 and 6.75

OpenStudy (partyshotz2409):

so find the mean of those

OpenStudy (rayep12):

um 23

OpenStudy (partyshotz2409):

no

OpenStudy (partyshotz2409):

add all of them then divide by 4

OpenStudy (rayep12):

5.75

OpenStudy (partyshotz2409):

ok then round the tenths place

OpenStudy (rayep12):

5.8

OpenStudy (partyshotz2409):

yes that is your answer

OpenStudy (rayep12):

do i round for the mean too?

OpenStudy (partyshotz2409):

no

OpenStudy (partyshotz2409):

it only said round your answer

OpenStudy (partyshotz2409):

well that is an answer so yes

OpenStudy (partyshotz2409):

7.3 and 5.8

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