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set.seed(1)
norm <- rnorm(100)
hist(x=norm,xlab="X Axis Name",ylab="Count",main="Histogram of 100 observations from a Standard Normal")
The sample mean of the data plotted above (rounded to 3 decimal points) is 0.109 and the variance is 0.807.
What’s the relationship between standard deviation and variance?
Standard Deviation(X)=√Variance(X)
The standard deviation of the data plotted above is 0.898.