Exercise 17 solutions

from pandas.io.excel import read_excel
from numpy import mean

d = read_excel("e17data.xlsx","Sheet 1 - Table 1")
m1 = mean(d['age'])
m2 = mean(d['score'])

[d,titles] = xlsread('e17data.xlsx');
m1 = mean(d(:,2));
m2 = mean(d(:,3));

library(gdata)
d = read.xls("e17data.xlsx")
m1 = mean(d[,2])
m2 = mean(d[,3])