Question

a business magazine was conducting a study into the amount of travel required for mid - level managers across the u.s. eighty - eight managers were surveyed for the number of days they spent traveling each year.
step 1 of 2: determine the cumulative frequency of the second class.
mid - level manager travel
days travelling: 0 - 8, 9 - 17, 18 - 26, 27 - 35, 36 - 44, 45 and above
frequency: 18, 27, 34, 6, 2, 1

Explanation:

Step1: Identify first two class frequencies

First class frequency: $18$, second class frequency: $27$

Step2: Sum frequencies for cumulative total

$\text{Cumulative frequency} = 18 + 27$

Answer:

$45$