Median for Grouped Data

Q.

The median for the data is :

$\begin{array}{cccccccc}\text{IQ}& 60-70& 70-80& 80-90& 90-100& 100-110& 110-120& 120-130\\ \text{No. of pupils}& 2& 3& 5& 16& 14& 13& 7\end{array}$

1. 102

2. 100

3. 105

4. 104

Q. A survey is taken with 15 employees on the number of projects that they have worked, and is listed. The measure that best represents the data is its

1. mean
2. median
3. mode