Standard deviation of a fair-coin Heads count

sigma = sqrt(n)/2 for the Heads count in n fair flips.

Usage

SdCoinSum(n)

Arguments

n

number of fair flips, >= 0.

Value

list(n, sd, sd_tot); sd_tot is an alias of sd kept for the eq (3.51) callers.

References

Morin, D. J. (2016). Probability: For the Enthusiastic Beginner. Createspace. Eqs (3.48), (3.51).

Examples

SdCoinSum(100)$sd
#> [1] 5