Compute standard deviation for the following data:
1.2.3.4.5,6,7
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Answer:
Given observation is
1,2,3,4,6,7
Mean=
7
1+2+3+4+5+6+7
=
7
28
=4
Variance=∑
+r=1
n
n
(x−x
i
)
2
=
7
(1−4)
2
+(2−4)
2
+(3−4)
2
+(4−4)
2
+(5−4)
2
+(6−4)
2
+(7−4)
2
=
7
3
2
+2
2
+1
2
+0+1
2
+2
2
+3
2
=
7
9+4+1+1+4+9
=
7
28
=4
standard deviation=
variance
4
=2
Step-by-step explanation:
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