1. Find the Range. (Highest Score - Lowest Score)
2. Find k. (k = √n) n is the no. of population. Round Off
3. Find the interval. (Range/k) always round up.
4. Find the classes. Starting from lowest score, interval - 1 = next class, until highest score (pwede lumampas, basta hindi kulang)
6. Find the numerical value of the tally
7. Complete the table (class, frequency, lower boundary, <cf - starting from lowest class frequency, add the upper class' frequency until you finish at the top.)
8. Assumed mean - after getting the result from the formula, find a class that has the closest higher <cf.
9. To check if the computation is right, the final answer should be in the class range.