Help please.
Find the mean and the range of the data set. Show your work.
55 62 61 54 68 72 59 61 70
55+62+61+54+68+72+59+61+70 = 562
55+62 = 117+61= 178+54=232+68 =300+72= 372+59=431+61=492+70=562 Our mean is 9/562 and our most common number is =61
I got 0.016014234
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OpenStudy (lynfran):
to find the mean u add up all the numbers and then divide by the amount of numbers ...to find the range u take the largest number and subtract the smallest number...
OpenStudy (anonymous):
The largest number in the data set?
OpenStudy (lynfran):
yes
OpenStudy (anonymous):
70 - what?
OpenStudy (lynfran):
and ur mean shd be 562/9.....
the largest #is 72
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OpenStudy (anonymous):
Alright do i divide first then subtract?
OpenStudy (lynfran):
no lets do the mean first
55+62+61+54+68+72+59+61+70=562
now how many numbers are there
OpenStudy (lynfran):
how many numbers did i add to get 562?
OpenStudy (anonymous):
9
OpenStudy (lynfran):
good so we have to divide the 562 by 9 to find the mean
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OpenStudy (anonymous):
562/9 = 62
OpenStudy (anonymous):
I did it backwards DX
OpenStudy (anonymous):
That's how i got a zero digit number
OpenStudy (lynfran):
62.4
OpenStudy (anonymous):
Yeah didn't think i need to include the 4 but alright.
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OpenStudy (lynfran):
to find the range we take the largest # and subtract the smallest #....whats the largest number? whats the smallest #?
OpenStudy (anonymous):
72, 54
OpenStudy (lynfran):
good 72-54=?
OpenStudy (anonymous):
72-54 = 18
OpenStudy (lynfran):
good thats ur range
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OpenStudy (anonymous):
Isn't all?
OpenStudy (lynfran):
if you were finding for the mode then i would have been 61...since the mode is the number that occurs the most