25. For a normal distribution, the estimated value of quartile deviation is 14. Find the value of its standard deviation.
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1
Answer:
Correct option is D)
Quartile Deviation (Q
D
) means the semi variation between the upper quartile or third quartile (Q
3
) and lower quartile or first quartile (Q
1
) in a distribution.
Formula = Q
D
=
2
Q
3
−Q
1
Given, Q
D
=10 and Q
3
=35
10=
2
35−Q
1
Q
1
=15
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