1
You visited us
1
times! Enjoying our articles?
Unlock Full Access!
Byju's Answer
Standard IX
Mathematics
Grouped Frequency Table
If the mean o...
Question
If the mean of the following frequency distribution is 8, find the value of p.
x
3
5
7
9
11
13
f
6
8
15
p
8
4
Open in App
Solution
We will make the following table:
(x
i
)
(f
i
)
(f
i
)(x
i
)
3
6
18
5
8
40
7
15
105
9
p
9p
11
8
88
13
4
52
∑
f
i
=
41 + p
∑
f
i
x
i
=
303 + 9p
We know:
Mean
=
∑
f
i
x
i
∑
x
i
Given:
Mean = 8
Thus, we have:
8
=
303
+
9
p
41
+
p
⇒
328
+
8
p
=
303
+
9
p
⇒
p
=
25
Suggest Corrections
1
Similar questions
Q.
Find the missing frequency p
for the following frequency distribution whose mean is
28.25
.
Q.
Find the value of p for the following frequency distribution whose mean is 16.6
x
8
12
15
p
20
25
30
f
12
16
20
24
16
8
4
Q.
Answer the following questions in detail−
From the following frequency distribution calculate first and third quartile.
x
5
4
9
12
15
6
10
f
8
6
12
8
6
9
10
Q.
The mean of the following data is 8.
x
3
5
7
9
11
13
y
6
8
15
p
8
4
The value of p is
(a) 23
(b) 24
(c) 25
(d) 21
Q.
Find average for following discrete series.
X
3
5
6
7
8
f
2
4
3
8
10
View More
Join BYJU'S Learning Program
Grade/Exam
1st Grade
2nd Grade
3rd Grade
4th Grade
5th Grade
6th grade
7th grade
8th Grade
9th Grade
10th Grade
11th Grade
12th Grade
Submit
Related Videos
Introduction to Statistics
MATHEMATICS
Watch in App
Explore more
Grouped Frequency Table
Standard IX Mathematics
Join BYJU'S Learning Program
Grade/Exam
1st Grade
2nd Grade
3rd Grade
4th Grade
5th Grade
6th grade
7th grade
8th Grade
9th Grade
10th Grade
11th Grade
12th Grade
Submit
AI Tutor
Textbooks
Question Papers
Install app