Need help Calculating absolute Frequency

Hi: I’m a level 1 candidate. Is there a method to determine the absolute frequency on a HP12C? Here’s the problem: -30% < R

I am not sure you are understanding the problem. Absolute frequency is simply the number of observations in a given interval (in this case # observations between -20 and -10), so there really is no calculation to be made, other than counting.

O.k, then how do you get 3, in the above sample I posted? How am I suppose to look at this?

You count the number of observations in a certain interval. For instance, the absolute frequency of interval “-10% < R < 0%” is 3 because you count three observation of return value in range from -10% to 0