Question

The frequency distribution below summarizes employee years of service for Alpha Corporation. Determine the class width of each class.

Year of Service Frequency
1 - 5 5
6 - 10 20
11 - 15 25
16 - 20 10
21 - 25 5
26 - 30 3

A. 4
B. 6
C. 5
D. 10

Answer 1

The class width for each class in the frequency distribution is determined by subtracting the lower bound from the upper bound, yielding a class width of 4 years.

Step-by-step explanation:

To determine the class width of each class in the frequency distribution for Alpha Corporation's employee years of service, we look at the difference between the upper and lower bounds of any class. Taking the first class, 1 - 5, we subtract the lower bound from the upper bound (5 - 1) and get a class width of 4 years.

The other classes follow the same pattern:

• For 6 - 10, the width is (10 - 6) = 4 years.
• For 11 - 15, the width is (15 - 11) = 4 years.
• For 16 - 20, the width is (20 - 16) = 4 years.
• For 21 - 25, the width is (25 - 21) = 4 years.
• For 26 - 30, the width is (30 - 26) = 4 years.

Therefore, the class width for each class is 4 years. The answer is A. 4.