S10 Day 1: Standard Deviation

1 개요

Day 1: Standard Deviation

1일차: 표준편차

• https://www.hackerrank.com/challenges/s10-standard-deviation/problem

해커랭크 10 Days of Statistics

문제	C	C++	C#	Go	Java	node.js	Perl	PHP	Python	R	Ruby
0-1 Day e
S10 Day 0: Mean, Median, and Mode
S10 Day 0: Weighted Mean
S10 Day 1: Quartiles
S10 Day 1: Interquartile Range
S10 Day 1: Standard Deviation

2 R

data = scan("stdin")
N = data[1]
X = data[1:N+1]
mu = mean(X)
sum = 0
for(i in 1:N) {
  sum = sum + (X[i]-mu)^2
}
cat( round(sqrt(sum/N),digits=1) )