ADDSC. Frequency

21-20 4

31-40 23

41-40 60

51-60 76

61-70 51

69-80 9

You will add to the existing table by adding a column for the cumulative frequency and a column for the cumulative percentage. Please display your table.

From the table you have created, find two percentages that are not already listed on your table (such as 40% or 50%). Please show your math on how you reached these two percentages that you have chosen.

Lastly, explain how knowing the percentages of data can help you better understand the variable or the data.