Question

the age30 students of a night school are given below:
3. The ages of 30 stu
Number of students 5 | 6 | 7 | 8
Age
15 16 17 18
What is the average age of these students ?
(1) 16 (2) 17 (3) 16.8 (4) 17.8
4
19​

Answer 1

Answer:

16.5

Step-by-step explanation:

average=no.of observations ÷ total no.of observations

average=15+16+17+18÷4

average=66÷4

average =16.5

Answer 2

Answer:

17 is your answer

Step-by-step explanation:

X = (15x5) + (16x6) + (17x7) + (18x8) +(19x4)

_____________________________

5+6+7+9+4

X = 75+ 96+ 11+ 144 + 76

________________

30

X= 510

_____

30

X= 17