To run the descriptive statistics on some data (not grouped, just a list), go to Menu-Data analysis and then select Descriptive statistic.
I found this very cool and comfortable to use, but I can’t use it for grouped data on X_i and n_i (absolute frequency). Let’s suppose this quick example:
X_i | n_i
---|---
2 | 3
4 | 1
3 | 10
10 | 9
0 | 4
What I can do to use this cool feature is to write down three times “2” in two different cells, one “4”, ten “3”, etc., and then do the process. Is there any faster way to do that?