class_ex1

""" Exercise 1 Statistical measures of a small sample """ from pylab import * x = array([12.1,12.3,12.2,12.2,12.4,12.3,12.2,12.4,12.2,12.5]) x_mean = mean(x) x_median = median(x) x_variance = var(x) x_std = std(x) x_modes = hist(x) savefig('.') x_mode_ind = argmax(x_modes[0]) x_mode_count = x_modes[0][x_mode_ind] x_mode_val = x[x_mode_ind] print "Data:"; print x print "Mean: %f " % x_mean print "Median: %f" % x_median print "Variance: %f" % x_variance print "STD: %f " % x_std print "Mode of x %f appears %d times" % (x_mode_val,x_mode_count) 

Data:
[ 12.1  12.3  12.2  12.2  12.4  12.3  12.2  12.4  12.2  12.5]
Mean: 12.280000 
Median: 12.250000
Variance: 0.013600
STD: 0.116619 
Mode of x 12.200000 appears 4 times

Data:
[ 12.1  12.3  12.2  12.2  12.4  12.3  12.2  12.4  12.2  12.5]
Mean: 12.280000 
Median: 12.250000
Variance: 0.013600
STD: 0.116619 
Mode of x 12.200000 appears 4 times