code: def printFrequencyStatistics(counts, frequencies, numWords, size):
    
    avgBits = float(counts.sum())/numWords
    print "Retina width=128, height=128"
    print "Total number of words processed=",numWords
    print "Average number of bits per word=",avgBits,
    print "avg sparsity=",avgBits/size
    print "counts matrix sum=",counts.sum(),
    print "max=",counts.max(), "min=",counts.min(),
    print "mean=",counts.sum()/float(size)
    print "frequency matrix sum=",frequencies.sum(),
    print "max=",frequencies.max(), "min=",frequencies.min(),
    print "mean=",frequencies.sum()/float(size)
    print "Number of bits with zero entries",frequencies.nZeroCols()
docs: Print interesting statistics regarding the counts and frequency matrices