Layla

From what I have read from you all and from different people I understood that the N-1 has two meanings: 
One:  To increase the accuracy of the population estimation by increasing the sample variance through the decreasing of the denominator by one (N-1); Here I have a question: Why should we increase the variance if we know that by inc…[Read more]

Your approach works if the ball is heavier.  It doesn’t work however if the ball is lighter.