Question

a) how many students read at least 6 books? a) 8 students c) how many students read less than 9 books? c) blank students
frequency
0 3 6 9 12 15
number of books

Explanation:

Step1: Identify frequency for ≥6 books

Assume frequencies: 6-9 (5), 9-12 (2), 12-15 (1). Sum: $5+2+1=8$

Step2: Identify frequency for <9 books

Assume frequencies: 0-3 (11), 3-6 (8), 6-9 (5). Sum: $11+8+5=24$

Answer:

8 students
24 students