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Mathematics 21 Online
undeadknight26 (undeadknight26):

PLease help me its sooo urgent i can die! no jk.

OpenStudy (potatoes.ramu):

Question? :)

OpenStudy (anonymous):

help you with what? :)

undeadknight26 (undeadknight26):

Gomen poeple: Mrs. Smith has taught three, Algebra I classes this year. She just finished grading her final chapter test for the second semester. The raw data is below: Class A Class B Class C 80 72 100 85 90 90 87 85 94 92 84 100 86 91 75 90 78 30 94 94 94 100 86 72 75 82 85 45 78 87 85 86 42 38 78 100 72 95 90 94 90 94 62 88 60 ________________________________________ Question 1 Analyze the data for Class A and Class B. • Part 1: What is the mean and standard deviation for Classes A and B?

OpenStudy (potatoes.ramu):

First find the mean!!

OpenStudy (potatoes.ramu):

Add all the numbers and divide by the number of numbers

OpenStudy (anonymous):

ummmmm brain over load i have no clue

OpenStudy (potatoes.ramu):

Then for each number, subtract the mean and square the result!

OpenStudy (potatoes.ramu):

Then find the mean of those squared differences

OpenStudy (potatoes.ramu):

And take the square root of that value, and that's it :)

OpenStudy (potatoes.ramu):

@undeadknight26

undeadknight26 (undeadknight26):

dam...shes smart...

OpenStudy (potatoes.ramu):

lol thanks, so are you :)

undeadknight26 (undeadknight26):

So add up all of them like Class a b and c? then find the means a square it or add up class a b and c seperatly?

OpenStudy (anonymous):

sorry i couldnt help undead knight

OpenStudy (potatoes.ramu):

Separately I think :(

OpenStudy (anonymous):

separately

OpenStudy (potatoes.ramu):

Yup.. like @kag said

undeadknight26 (undeadknight26):

*pats cam on back* just you being here is helping XD

OpenStudy (anonymous):

hey i will leave this page again bye

undeadknight26 (undeadknight26):

byes.

undeadknight26 (undeadknight26):

Thanks all that will be all i need help with today!

OpenStudy (anonymous):

np

OpenStudy (anonymous):

wow u didnt care if i left lol

undeadknight26 (undeadknight26):

-_-

OpenStudy (anonymous):

wat

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