Overview: 3 questions will be solved this time.Among them
☆3 mathematical statistics
[ 1/3 data statistics ]
Work: Please make statistics on the following data: 8,7,9,13,12,15,8,8,11,9 。
Question type: data statistics Total data:10
The sum:100
Average value:10
Variance:6.2
Standard deviation:2.48998 *Note: Totally 5 items are counted.[ 2/3 data statistics ]
Work: Please make statistics on the following data: 4,7,4,4,6 。
Question type: data statistics Total data:5
The sum:25
Average value:5
Variance:1.6
Standard deviation:1.26491 *Note: Totally 5 items are counted.[ 3/3 data statistics ]
Work: Please make statistics on the following data: 2,5,2 。
Question type: data statistics Total data:3
The sum:9
Average value:3
Variance:2
Standard deviation:1.41421 *Note: Totally 5 items are counted.Your problem has not been solved here? Please go to the Hot Problems section!