## kittykatmeow 3 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

1. bunyonb

dam i forgot aout averages

2. bunyonb

what was mean average again?

3. campbell_st

if 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 =

4. Spectrum

she said 178 my friend

5. kittykatmeow

@Spectrum yeah, ahaha It did help me figure out how to solve it though. I think I've figured it out. (:

6. Spectrum

alright good :)

7. kittykatmeow

Got it. :) Thanks for all the help!

8. campbell_st

add 1000 to the sum of the scores...