might not have said oh it's 3 over 13 you have to do a little bit more math derive what it is and you find that you know the equation comes down to what you see here which is some summation of all the values you've got in the denominator and the number of samples on top so this is the general version your lambda will be some sense the one over the average of the x-values that you perceive do the same thing for the distributions how about uniform distribution what do you think can be the outcome there we can plug in the