Question

question 1 of 6, step 2 of 2
correct
consider the following frequency table representing the distribution of hourly wages for first jobs of a certain population.
hourly wage at first job

class

frequency

----

----

7.6–8.4

11

8.5–9.3

10

9.4–10.2

4

10.3–11.1

6

11.2–12.0

4

step 2 of 2: determine the cumulative frequency for the second class.

Explanation:

Step1: Identify relevant frequencies

The second class is 8.5–9.3. We need the frequency of the first class (11) and the second class (10).

Step2: Sum the frequencies

Add the frequency of the first class to the second class.
$\text{Cumulative Frequency} = 11 + 10$

Answer:

21