Question

33. The given table gives the enrolment in
Higher Secondary School in 1978. Find the
average enrolment in H.S. School,
Enrolment Number of schools
20-39
526
40-59
620
60-79
674
80-99
717
100-119
681
120-139
612
140-159
540
160-179
517
180-199
552
Total
5439
5
.

Answer 1

The  average enrolment in H.S. School is 604.33.

To find : The average enrollment in H.S.School.

Average :

Average can be determined by dividing the sum of the terms by total number of terms. It's sometimes known as mean.

           $Average =\frac{\text { Sum of the terms }}{\text { Number of terms }}$

Given :

Enrollment   No. of schools            

20 - 39                526                                          

40 - 59                620              

60 - 79                674

80 - 99                717

100 - 119             681

120 - 139             612

140 - 159            540

160 - 179             517

180 - 199             552

Total                5439

Finding the average enrollment :

Sum of the terms = 5439

Number of terms = 9

 $Average =\frac{\text { Sum of the terms }}{\text { Number of terms }}$

Average = $\frac{5439}{9}$

               = 604.33

Therefore, the average enrollment is 604.33.

To learn more...

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