Question

3. Following is the distribution of marks in economics obtained by 50 studentsioe):
Marks more than
O 10 20 30 40 50
Number of students 50 46 40 20 10 3
Calculate the median marks if 60% of the students mark pass this test find the minimum marks
obtained by a pass candidates)​

Answer 1

Answer:

Step-by-step explanation:Marksobtained No.ofstudents

(f) Cumulativefrequency

0−20 4 4

20−40 6 10

40−60 25 35

60−80 10 45

80−100 5 50

⇒ Here, N=50, then

2

N

​

=

2

50

​

=25

We can see, 25 is nearest to cumulative frequency 35 which has class interval 40−60

∴ Median class =40−60.

⇒ In frequency table we can see class 40−60 has highest frequency 25.

∴ Modal class =40−60