Question

Class boundaries
Frequency
39.5-49.5
1
49.5-59.5
3
59.5-69.5
4.
69.5-79.5
5
79.5-89.5
4
89.5-99.5
2
99.5-109.5
1
1
43​

Answer 1

Explanation:

Class-boundaries. 40-49. 1. 39.5-49.5. 50-59. 3. 49.5-59.5. 60-69. 4. 59.5-69.5. 70-79. 5. 69.5 -79.5. 80-89. 4. 79.5-89.5. 90-99. 2. 89.5-99.5