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

Question

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

anonymous · Answer

dam i forgot aout averages

anonymous · Answer

what was mean average again?

campbell_st · Answer

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 =

anonymous · Answer

she said 178 my friend

anonymous · Answer

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

anonymous · Answer

alright good :)

anonymous · Answer

Got it. :)
Thanks for all the help!

campbell_st · Answer

add 1000 to the sum of the scores...