Question

Consider the data set: $6,4,5,9,4,8,2,4,20$
Median of the data set without outlier is

• A. 4.5
• B. 4
• C. 3.5

Answer 1

The correct option is A 4.5

The outlier of the data set is 20

Data set in increasing order without outlier $20$: $2,4,4,4,5,6,8,9$

The median of data set $=$ mean of $4^{th}\&5^{th}$ position $=\frac{4+5}{2}=4.5$

$\therefore$ The median without outlier is 4.5