Average value:
Zhang =9.5, Li =9.6.
Median:
Zhang: 9.6, Li: 9.6
After removing the highest score and the lowest score in each set of data "
Average value:
Zhang =9.56, Li =9.62.
Median:
Zhang: 9.6, Li: 9.6
The average is changing and the median is unchanged.
Because the maximum or minimum is likely to affect the average, but the median is not affected.