Find the mean deviation about the mean for the following data:
`6, 7, 10 , 12 , 13 , 4, 8, 12`

Explanation

To find the mean deviation about the mean for the given data set: `6, 7, 10, 12, 13, 4, 8, 12`, we will follow these steps:

### Step 1: Calculate the Mean
The mean (average) is calculated using the formula:
\[ \text{Mean} = \frac{\sum x_i}{n} \]
where \( \sum x_i \) is the sum of all data points and \( n \) is the number of data points.
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