The distribution below shows the number of wickets taken by bowlers in one-day cricket matches. Find the mean number of wickets by choosing a suitable method. What does the mean signify?

Explanation

To find the mean number of wickets taken by bowlers in one-day cricket matches using the step deviation method, we will follow these steps:

### Step 1: Organize the Data
We need to organize the data into a frequency distribution table. The intervals and the corresponding frequencies (number of bowlers) are as follows:

| Wickets Interval | Frequency (f) |
|-------------------|---------------|
| 20 - 60 | 20 |
...