New Learning Composite Mathematics SK Gupta Anubhuti Gangal Class 8 Data Handling Self Practice 13B Solution
(4) (a) Bird
(b) dog
(5) (a) Maridian
(b) (900 – 400) = 500 million people.
(6) (a) 5000 sq miles.
(b) largest lake area = 32,000 (Superior)
Smallest lake area = 75000 (Ontario)
∴ 32000/7500 = 4.26 ∝ 4 times.
(c) (10,000 – 7500) = 2500
(d) Between Michigan & Huran.
(10)
Class interval | Frequency |
0 – 10 | 6 |
10 – 20 | 16 |
20 – 30 | 4 |
30 – 40 | 0 |
40 – 50 | 3 |
50 – 60 | 1 |
(11)
Salary | 15 – 20 | 20 – 25 | 25 – 30 | 30 – 35 | 35 – 40 |
No of Emp | 35 | 30 | 45 | 40 | 10 |
(12)
(a) 10 + 25 + 15 + 5 + 1 = 56
(b) (3 – 6) hr.
(c) (12 – 15) hours
(d) 5 time (∵ 25/5 = 5)