To find the deviation of a data point from the mean, you calculate the difference between the data point and the mean.
Given:
- Mean = 9.25
- Data point = 9.5
The deviation is calculated as follows:
\[ \text{Deviation} = \text{Data point} - \text{Mean} \]
Substituting the values:
\[ \text{Deviation} = 9.5 - 9.25 = 0.25 \]
So, the deviation of the data point 9.5 from the mean 9.25 is 0.25.