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OpenStudy (anonymous):
What is the standard deviation of the data set given below? 4, 7, 8, 9, 12 A. 6.8 B. Rad 6.8 C. Rad 8.5 D. Rad 2.5 E. 2.5 F. 8.5
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OpenStudy (anonymous):
@lizz123
OpenStudy (anonymous):
@Michele_Laino
OpenStudy (michele_laino):
please youhave to find the mean value first
OpenStudy (lizz123):
add 3+7+8+9+12
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OpenStudy (lizz123):
then divide it by 5
OpenStudy (michele_laino):
@apexhelpp try please!
OpenStudy (anonymous):
22.2
OpenStudy (lizz123):
nope. 3+7=10+8=18+9=27+12=39 39/5=7.8
OpenStudy (anonymous):
wait that isnt the answer right?
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OpenStudy (lizz123):
ik
OpenStudy (anonymous):
then what do we do
OpenStudy (lizz123):
@Michele_Laino
OpenStudy (anonymous):
my answer was 8.414 so would 8.5 be the answer?
OpenStudy (michele_laino):
Sorry I got mean=8
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