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Mathematical statistics：
Enter the data to be counted, separated by commas (","), and click Next to get the statistics results.
Statistical items: total data, sum, average, variance and standard deviation.
Note: Statistical data can only be numbers, which cannot be algebraic expressions or mathematical functions (including trigonometric functions).
Enter the data to be counted, separated by commas (","), and click Next to get the statistics results.
Statistical items: total data, sum, average, variance and standard deviation.
Note: Statistical data can only be numbers, which cannot be algebraic expressions or mathematical functions (including trigonometric functions).
Current location：Mathematical operation > History of Mathematical Statistics > Answer
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: 2438,5 。
Question type: data statistics
Total data：2
The sum：2443
Average value：1221.5
Variance：1479872.25
Standard deviation：1216.5
*Note: Totally 5 items are counted.
[ 2/3 data statistics ]
Work: Please make statistics on the following data: 2779,6 。
Question type: data statistics
Total data：2
The sum：2785
Average value：1392.5
Variance：1922382.25
Standard deviation：1386.5
*Note: Totally 5 items are counted.
[ 3/3 data statistics ]
Work: Please make statistics on the following data: 3121,7 。
Question type: data statistics
Total data：2
The sum：3128
Average value：1564
Variance：2424249
Standard deviation：1557
*Note: Totally 5 items are counted.