the table displays the scores of students on a recent exam. find the mean of the scores to the nearest…
the table displays the scores of students on a recent exam. find the mean of the scores to the nearest 10th.\n|score|number of students|\n|----|----|\n|80|1|\n|85|6|\n|90|7|\n|95|2|\n|100|6|\nanswer
Answer
Explanation:
Step1: Calculate the sum of the products of scores and number of students
$80\times1 + 85\times6+90\times7 + 95\times2+100\times6$ $=80+510 + 630+190+600$ $=2010$
Step2: Calculate the total number of students
$1 + 6+7+2+6=22$
Step3: Calculate the mean
$\frac{2010}{22}\approx91.4$
Answer:
$91.4$