291537 How many students got marks between 60 and 75?
3 62, 62, 73
291437 What is the difference between the maximum and the minimum number of students?
300 700 - 400 = 300
291438 The number of times an observation occurs in a data is called its.
Frequency
291439 The pie-chart is divided into.
Sectors
291489 What is the total number of seats won by party C and party D?
40 20 + 20 = 40