The favourite indoor games of 30 students of Class IX are recorded below in the order they were mentioned:
a. Chess, Carrom, Ludo, Chess, Chess, Carrom, Carrom, Ludo, Carrom, Chess, Ludo, Chess, Carrom, Ludo, Chess, Ludo, Chess, Carrom, Chess, Ludo, Carrom, Ludo, Chess, Carrom, Chess, Ludo, Carrom, Chess, Ludo, Chess
b. (i) Prepare an ungrouped frequency distribution table for the above data.
c. (ii) Add a cumulative frequency column to your table.
d. (iii) Using the table, determine how many students prefer either Chess or Carrom taken together.