Question

For a symmetrical distribution lower quartitl is 20 and upper quartile is 40.The value of 50th percentile is

• A. 20
• B. 40
• C. 30
• D. none of these

Answer 1

Answer: (C)

30

First quartile also called the lower quartile or the 25th percentile(splits off the lowest 25% of data from the highest 75%)
Second quartile also called the median or the 50th percentile (cuts data set in half)
Third quartile also called the upper quartile or the 75th percentile (splits off the highest 25% of data from the lowest 75%)
Since its a symmetrical distribution therefore the median will be 30