1
You visited us
1
times! Enjoying our articles?
Unlock Full Access!
Byju's Answer
Standard XII
Mathematics
Standard Deviation about Mean for Continuous Frequency Distributions
If the varian...
Question
If the variance of
1
,
2
,
3
,
4
,
5
,
.
.
.
,
x
is
10
, then the value of
x
is
A
9
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
13
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
12
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
10
No worries! We‘ve got your back. Try BYJU‘S free classes today!
E
11
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
Open in App
Solution
The correct option is
E
11
We know that, the variance of first
x
natural number is
Var
(
x
)
=
x
2
−
1
12
=
10
....(given)
⇒
x
2
=
120
+
1
=
121
⇒
x
=
11
Suggest Corrections
0
Similar questions
Q.
If the mode of the following data
10
,
11
,
12
,
10
,
15
,
14
,
15
,
13
,
12
,
x
,
9
,
7
is
15
, then the value of
x
is:
Q.
If the mean and variance of eight numbers
3
,
7
,
9
,
12
,
13
,
20
,
x
,
y
are
10
and
25
respectively, then which of the following is false
(
x
>
y
)
Q.
If the mean and variance of eight numbers
3
,
7
,
9
,
12
,
13
,
20
,
x
and
y
be
10
and
25
respectively, then
x
y
is equal to
Q.
If
x
=
√
12
−
√
9
,
y
=
√
13
−
√
10
and
z
=
√
11
−
√
8
, then which of the following is true?
Q.
if
1
9
!
+
1
10
!
=
x
11
!
, then the value of
x
is :
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
MATHEMATICS
Watch in App
Explore more
Standard Deviation about Mean for Continuous Frequency Distributions
Standard XII 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