Find the sample standard deviation and the population standard deviation of the data set.
17, 37, 56, 16, 12, 16, 19, 45, 14, 37, 21, 26, 43, 46, 42

Question

Find the sample standard deviation and the population standard deviation of the data set.
17, 37, 56, 16, 12, 16, 19, 45, 14, 37, 21, 26, 43, 46, 42

amistre64 · Answer

define the mean, subtract the mean from each element;  square the results;  find the mean of the squares ....

amistre64 · Answer

the difference between population is sample is:  population is a usual mean of the square; whereas the sample divides by 1 less

anonymous · Answer

okay for the mean i got 17.8... is that right?

amistre64 · Answer

the mean of the set?  29.8 i beleive

anonymous · Answer

and if so.. i just do 17-17^2+37-17^2+56-17^2...?

anonymous · Answer

yeah

anonymous · Answer

i put them in order and then divided it

amistre64 · Answer

subtract the mean from each element

anonymous · Answer

oh wait let me do it again

amistre64 · Answer

17 - 29.8
37 - 29.8
56 - 29.8
16 - 29.8

etc ....

then square those results

amistre64 · Answer

i dont spose you have a ti83 calculator?

anonymous · Answer

i have a 30x caculator

amistre64 · Answer

hmmm, that sounds like one of those "financial" calcs

anonymous · Answer

okay nvm. i got 29

amistre64 · Answer

i have a 30xa that i havent quite figured out how to work stats on

anonymous · Answer

yeah idk what kind of caculator it is but i have trouble trying to square all of those numbers in it. it gives me an" error domain"

anonymous · Answer

oh okay wow. i thought i was the only one who didnt know how to do it on the caculator. maybe its not suitable for this tpe of caculator

amistre64 · Answer

its better suited for a ti83 or 84; they have much more functionality for this

anonymous · Answer

dang it... and im using my own caculator. the school has the same kind as mine.

amistre64 · Answer

you have a button that looks like:$$\sum+$$right?

anonymous · Answer

no. but i have buttons that say x^2 and the up arrow

amistre64 · Answer

amistre64 · Answer

mines the one on the right ...

amistre64 · Answer

if yours has a data button, that might be a place that you can load your set

anonymous · Answer

crap i got to go.. im going to make anew acount. can i just message you when i get back on here?

anonymous · Answer

oh okay. i wonder how you ddi that!

amistre64 · Answer

you can message if you need to

amistre64 · Answer

i just found the users guide to yours i believe