Overview: 1 questions will be solved this time.Among them
☆1 mathematical statistics
[ 1/1 data statistics ]
Work: Please make statistics on the following data: 74,97,96,89,98,74,65,76,72,78,99,72,97,76,99,74,99,73,98,74 。
Question type: data statistics Total data:20
The sum:1680
Average value:84
Variance:145.4
Standard deviation:12.05819 *Note: Totally 5 items are counted.Your problem has not been solved here? Please go to the Hot Problems section!