Population of 5 subjects; tested with the following results: 2,4,6,8,10; Find all samples of size = 2 randomly without repetition. Calculate the arithmetic mean for each.
Procedure:
I apply the formula N! / (N-n)! 5! / (5-2)! = 20 (sample space)
- 24, 26, 28, 210;
- 42, 46, 48, 410;
- 62, 64, 68, 610;
- 82, 84, 86, 810;
- 102, 104, 106, 108;
Is the execution correct? Should I eliminate the 3-digit numbers that do not respect the numerosity = 2?
Does the arithmetic mean relate to individual lines or the total of numbers?
Thanks for the help you can give me.
