Calculate average of the following discrete series. Use Short-cut Method by taking 25 as assmed average. {:("Size",30,29,28,27,26,25,24,23,22,21),("Frequency (f)",2,4,5,3,2,7,1,4,5,7):}

Calculate average of the following discrete series. Use Short-cut Meth

1.	Calculate average of the following discrete series. Use Short-cut Method by taking 25 as assmed average. {:("Size",30,29,28,27,26,25,24,23,22,21),("Frequency (f)",2,4,5,3,2,7,1,4,5,7):}
Answer» ANSWER :AVERAGE = 24.925