Question

The cost of 250 articles is given below:
Cost (in 3)
No. of articles
less than 20
less than 30
less than 40
less than 50
less than 60
less than 70
number of articles
22
40
75
190
228
250
Construct a frequency distribution table for
the data given above. Also, answer the
following:
(i) how many articles cost from 30 to less
than 50 ?
(ii) how many articles have cost at most
40 ?
(ii) how many articles have cost at least
50 ?​

Answer 1

Answer:

Converting the frequency distribution into less than cumulative frequency distribution

Marks No. of Students

less than 10 7

less than 20 17

less than 30 40

less than 40 91

less than 50 97

less than 60 100

According to graph median = 34 marks

Answer 2

Answer:

1. 150
2. 75
3. 60

Step-by-step explanation:

Cost(in ₹). Frequency

10-20. 22

20-30. 18

30-40. 35

40-50. 115

50-60. 38

60-70. 22