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4.3561
2009 Oct 20
2
descriptive statistics qn
This is day one on R for me, I am trying to figure out how to do simple
computations. For example I have a data set with 200 observations. I am
trying to compute the mean and variance in r for 1:25 (first 25
observations); 1:50 (first 50 obs) ; 1:100th observation etc. Here is the
dataset:
Id value
1 2.2338
2 3.13597
3 1.98685
4 4.35593
5 2.43963
6 4.20262
7 3.12131
8 4.79583
9 3.13937
10