Statistics And Probability Question 364
Question: If 25% of the item are less than 20 and 25% are more than 40, the quartile deviation is
Options:
A) 20
B) 30
C) 40
D) 10
Show Answer
Answer:
Correct Answer: D
Solution:
Here, we are given that the lower quartile $ Q_1=20 $ and the upper quartile $ Q_3=40 $ Hence quartile deviation $ \frac{Q_3-Q_1}{2}=\frac{40-20}{2}=\frac{20}{2}=10 $ .
BETA
