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
.
Answers
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.
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 =
= 604.33
Therefore, the average enrollment is 604.33.
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