Question

siblings
what was the median number of siblings?

Explanation:

Step1: Calculate total number of students

$$7 + 2+5 + 5+3=22$$

Step2: Find the middle - value position

Since \(n = 22\) (even), the median is the average of the \(\frac{n}{2}\)th and \((\frac{n}{2}+1)\)th values. \(\frac{22}{2}=11\) and \(\frac{22}{2}+1 = 12\)

Step3: Cumulative frequency

For \(0\) siblings: cumulative frequency \(=7\)
For \(1\) sibling: cumulative frequency \(=7 + 2=9\)
For \(2\) siblings: cumulative frequency \(=9+5 = 14\)
The \(11\)th and \(12\)th values fall in the \(2\) - siblings group

Answer:

\(2\)