Friday

September 19, 2014

September 19, 2014

Posted by **Pat** on Saturday, January 28, 2012 at 3:11pm.

- statistics -
**PsyDAG**, Sunday, January 29, 2012 at 11:33amMean = Σx/n

Σx = n * mean1 = 30 * 77 = 2310

Σx = n * mean2 = 6 * 83 = 498

total mean = (2310+498)/(30+6) = ?

**Answer this Question**

**Related Questions**

statistics - Suppose that the mean score of an exam was 77 when taken 30 ...

statistics - Can you please tell me how to solve for the following? Pedro took ...

probability and statistics - Suppose every student in your class got a score of ...

Statistics - Students were given an exam with 300 multiple-choice questions. The...

Statistics - In Professor Smith's statistics course, the correlation between ...

statistics - For a particular sample of 50 scores on a psychology exam, the ...

statistics - A large group of students has taken a college entrance exam. The ...

math - Statistics: Analyze student exam scores Students were given an exam with ...

math - The mean score on a Math exam was 50% and the standard deviation was 10...

Statistics - 5. Scores on a recent national statistics exam were normally ...