Posted by **John** on Monday, January 26, 2009 at 12:29am.

Period 1 has 15 students in it and a test average of 86%. Period 2 has 21 students in it and an average of 88%. Period 3 has 12 students in it and an average of 95%. Use weighted means to find the overall average of the classes.

## Answer this Question

## Related Questions

- math - The average score on a reading test for 58 students was 87.3. Twelve more...
- Physics - 170 students in a lecture hall can scream at 115 dB. Thus, we should ...
- Physics - 170 students in a lecture hall can scream at 115 dB. Thus, we should ...
- math - In his NPR radio program "A Prairie Home Companion," Garrison Keillor ...
- Math - the average score on a math test for 16 students was 66. six more ...
- Math - First period: 85, 83, 74, 70, 88,95,89,72,90,83,77,91,98,89,82,84 Second ...
- Algebra - Ms Newton's class took the same test as Mr. Euclid's students. Ms. ...
- Algebra - Ms Newton's class took the same test as Mr. Euclid's students. Ms. ...
- math hw - 10.Thirty students in a chemistry class took a test on which the ...
- Statistics - Thirty-two students took a 50-item Biology test. The average score ...