Question

I am having trouble on how to input data with frequency in Mathematica.
For example, I have 0 with 10,000 frequencies, 1 with 9000 freq, 2 with 3000 freq and 4 with 1000 freq.
Can anyone help me to input this data into mathematica and then I need to find the first, second and third moment of those numbers.
Thanks a lot!

Answer 1

Something like :

data = Join[ConstantArray[1, 9000], ConstantArray[2, 3000], ConstantArray[4, 1000]];

Mean[data]
Variance[data]
Kurtosis[data]