Find the mean deviation about the median for the data : `x_i` 15 21 27 30 35 `f_i` 3 5 6 7 8

Explanation

To find the mean deviation about the median for the given data, we will follow these steps:

### Step 1: Organize the Data
We have the following data:
- \(x_i\): 15, 21, 27, 30, 35
- \(f_i\): 3, 5, 6, 7, 8

### Step 2: Calculate the Total Frequency
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