Question

Practice Set 6.5
Observe the following frequency polygon and write the answers of the questions
below it.
1Y
Scale
X-Axis: 1 cm= 2 marks
Y-Axis: 1 cm =10 students
60
(65, 60)
50
(55, 50)
Students
40
(45, 40)
|(75, 35)
30
20
(35, 20)
(85, 15)
10
90 100X
X!
20 30 40 50 60 70 80
Y!
Marks
fig 6.6
(1) Which class has the maximum number of students ?
(2) Write the classes having zero frequency.
(3) What is the class-mark of the class, having frequency of 50 students ?
(4) Write the lower and upper class limits of the class whose class mark is 85.
(5) How many students are in the class 80-90?
melvaan (class 10 )​

Answer 1

Answer:

1,615.6________________