Standard Deviation Combining Data (Jee Mains) | ExamDuo
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Central Tendency Measures
Easy
Standard Deviation Combining Data
Standard deviation for combining data is:
SELECT ONE OPTION
A
x
c
=
n
1
x
1
+ n
2
x
2
n
1
+ n
2
B
x
c
=
n
2
x
1
+ n
1
x
2
n
1
+ n
2
C
x
c
=
n
1
x
1
- n
2
x
2
n
1
- n
2
D
x
c
=
n
2
x
2
- n
1
x
1
n
2
+ n
1
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