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.