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 2 years ago
I need help with this .. no clue whatsoever how to solve it. I suppose it should be easy, but I really don't know what to do. :/
"The mean score for 10 students on the chemistry final exam was 178. However, one teacher had made a mistake and recorded one student's score as ten points less than the actual score. What should the mean score be?"
Any help would be appreciated.. and yes, I know what mean is, just no clue how to solve this. (;
thanks. xx
 2 years ago
I need help with this .. no clue whatsoever how to solve it. I suppose it should be easy, but I really don't know what to do. :/ "The mean score for 10 students on the chemistry final exam was 178. However, one teacher had made a mistake and recorded one student's score as ten points less than the actual score. What should the mean score be?" Any help would be appreciated.. and yes, I know what mean is, just no clue how to solve this. (; thanks. xx

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bunyonb
 2 years ago
Best ResponseYou've already chosen the best response.0dam i forgot aout averages

bunyonb
 2 years ago
Best ResponseYou've already chosen the best response.0what was mean average again?

campbell_st
 2 years ago
Best ResponseYou've already chosen the best response.0if the mean is 78 for 10 students then \[78 = \frac{x}{10} ... or ...x = 780\] so the sum of the scores is 780 is a student receives an extra 10 points the then the total of the scores is 790... whats happens to the mean.... 790/10 =

Spectrum
 2 years ago
Best ResponseYou've already chosen the best response.0she said 178 my friend

kittykatmeow
 2 years ago
Best ResponseYou've already chosen the best response.0@Spectrum yeah, ahaha It did help me figure out how to solve it though. I think I've figured it out. (:

kittykatmeow
 2 years ago
Best ResponseYou've already chosen the best response.0Got it. :) Thanks for all the help!

campbell_st
 2 years ago
Best ResponseYou've already chosen the best response.0add 1000 to the sum of the scores...
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