The mean of the following frequency distribution is 50. Find the value of `pdot` Classes 0-20 20-40 40-60 60-80 80-100 Frequency 17 28 32 `p` 19

Explanation

To find the value of \( p \) in the given frequency distribution where the mean is 50, we can follow these steps:

### Step 1: Create a Table
We need to create a table with the class intervals, their corresponding frequencies, midpoints, and the product of frequency and midpoint.

| Class Interval | Frequency (\( f_i \)) | Midpoint (\( x_i \)) | \( f_i \times x_i \) |
|----------------|-----------------------|-----------------------|-----------------------|
| 0 - 20 | 17 | 10 | \( 17 \times 10 = 170 \) |
...