To calculate the deviation of a data point from the mean, you subtract the mean from the data point.
Given:
- Mean = 9.25
- Data point = 7
The deviation can be calculated as follows:
\[ \text{Deviation} = \text{Data point} - \text{Mean} \]
\[ \text{Deviation} = 7 - 9.25 = -2.25 \]
The deviation of the data point 7 from the mean 9.25 is \(-2.25\).