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inst/snippet/var02.R
In fastR2: Foundations and Applications of Statistics Using R (2nd Edition)
y <- 1:4
prob <- c(0.05, 0.20, 0.40, 0.35)
mean.y <- sum(y * prob); mean.y # E(Y)
sum((y - mean.y)^2 * prob) # Var(Y)
sum(y^2 * prob) - mean.y^2 # Var(Y) again
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fastR2 documentation built on Nov. 9, 2023, 9:06 a.m.
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y <- 1:4
prob <- c(0.05, 0.20, 0.40, 0.35)
mean.y <- sum(y * prob); mean.y # E(Y)
sum((y - mean.y)^2 * prob) # Var(Y)
sum(y^2 * prob) - mean.y^2 # Var(Y) again
Try the fastR2 package in your browser
Any scripts or data that you put into this service are public.
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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