Correct Answer - Option 3 : 23
Given:
The number are 20, 20, 21, 21, 22, 22, x, 23, 23, 24, 25, 27
The median of ascending order = 22.5
Formula used:
When N is even
Median = [(N/2 + 1)th + N/2th]/2
Calculation
Median = (6th + 7th) ÷ 2 = (22 + x) ÷ 2
⇒ 22.5 = (22 + x) ÷ 2
⇒ 45 = 22 + x
⇒ x = 23
∴ The required value of x is 23.