Can someone please check this answer

[clueless]

s=22,500-(150)sqrd/15
----------------------------
15-1



22500/15= 1500

1500/14= 107.143

answer=107.143

 

[Denis]

CONGRATS clueless: NOBODY has been able to confuse
me more than you just did!

 

[ChaoticLlama]

I concur. This forum does not space spaces so either use the 'code' tags or just use lots of brackets.

 

[tkhunny]

s=22,500-(150)sqrd/15
----------------------------
15-1
answer=107.143

Maybe

      22500 - (150^2)/15
s^2 = ------------------
            15-1

This may mean:
The sum of squares is 22500
The sum of the data is 150
The sample size is 15
You are trying to calculate the sample variance.

I get s² = 1500 and s = 38.73 You seem to be having problems with the Order of Operations.

Please take the advice of the previous two responses and try a little harder to write clearly. Glad to have you with us.

 

[Denis]

s=22,500-(150)sqrd/15
----------------------------
15-1
22500/15= 1500
1500/14= 107.143
answer=107.143

You've answered: (22500 / 15) / 14 correctly...
SOOOOOOO: what's that "(-150)sqrd" doing there ?