What is the mean of Jane's quiz scores; 82,64,73,91,85

The mean is the sum of the scores divided by the amount of scores. Thus, the mean is (82+64+73+91+85) / 5, or 395/5, or 79.

Mean is the average

basically you add the scores together then divided the sum by the number of quizzes she had so

82+64+73+91+85=sum=395

then divide by number of quizes

there are 5 scores so 5 quizes

395/5=79

the mean is 79