28
20
13
8
school is shown in the following distribution
The agewise participation of students in the Annual Function of a
(CBSE 2014
7-9
9-11
11-13 13-15 15-17 117-19
Age (in years)
Number of
students
15
18
30
50
48
Find the missing frequencies when the sum of frequencies is 18
Answers
Answer:
Missing frequencies = 10 & Mode = 14.82
Step-by-step explanation:
Age Number of students
5 - 7 x
7 - 9 15
9 - 11 18
11 - 13 30
13 - 15 50
15 - 17 48
17 - 19 x
the sum of frequencies is 181
x + 15 + 18 + 30 + 50 + 48 + x = 181
=> 2x = 20
=> x = 10
Maximum frequency 50 lies in 13 - 15
Mode lies in 13 - 15
Mode = 13 + 2 * (50 - 30)/(50 - 30 + 50 - 48)
= 13 + 2 * 20/22
= 14.82
Step-by-step explanation:
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Answer:
Step-by-step explanation:
Step-by-step explanation:
Age Number of students
5 - 7 x
7 - 9 15
9 - 11 18
11 - 13 30
13 - 15 50
15 - 17 48
17 - 19 x
the sum of frequencies is 181
x + 15 + 18 + 30 + 50 + 48 + x = 181
=> 2x = 20
=> x = 10
Maximum frequency 50 lies in 13 - 15
Mode lies in 13 - 15
Mode = 13 + 2 * (50 - 30)/(50 - 30 + 50 - 48)
= 13 + 2 * 20/22
= 14.82