# Statistics Example
# Module: stats.py
# Compute the mean, median, and
# standard deviation of the men's
# and women's heights in men.txt
# and women.txt

from statistics import *

men_heights = [ ]
fmen = open('men.txt', 'r')
fmen.readline( )
fmen.readline( )
for line in fmen:
    heights = line.strip( ).split(' ')
    for ht in heights:
        men_heights.append(float(ht))

fmen.close( )
print("Number of observations:", len(men_heights))
print("Mean of men's heights", mean(men_heights))
print("Median of men's heights", median(men_heights))
print("SD of men's heights", round(stdev(men_heights), 2))
print( )

women_heights = [ ]
fwomen = open('women.txt', 'r')
fwomen.readline( )
fwomen.readline( )
for line in fwomen:
    heights = line.strip( ).split(' ')
    for ht in heights:
        women_heights.append(float(ht))
fwomen.close( )
print("Number of observations:", len(women_heights))
print("Mean of women's heights", mean(women_heights))
print("Median of women's heights", median(women_heights))
print("SD of women's heights", round(stdev(women_heights), 2))