To find the deviation of a data point from the mean, you simply subtract the mean from the data point.
Given:
- Mean = 59
- Data point = 43
The deviation is calculated as follows:
\[ \text{Deviation} = \text{Data point} - \text{Mean} = 43 - 59 = -16 \]
Thus, the deviation of the data point at 43 is −16.