Green Belt Exam Questions and Answers 2024/2025

Green Belt Exam Questions and Answers 2024/2025 What is the Mean, Mode & Median for the data in Column 1, Data Set A? a. Mean = 8.7, Mode = 8, Median = 7 b. Mean = 8.7, Mode = 7, Median = 8 c. Mean = 8, Mode = 8.7, Median = 7 d. Mean = 7, Mode = 7, Median = 8.7 e. Mean = 8, Mode = 8, Median = 7 - answer-Answer B Formula: Mean = Sum(x)/n = 8.7 Mode = Most frequent value = 7 Median = because sample is even (n=50), the median is the average of the (n/2)th and ((n/2)+1)th values in the sorted series = 8 Please reference Quantifying Process Variability for more information. A call center was experiencing customer complaints about time-on-hold and an improvement team was formed to solve the problem. The manager of the call center joined the team's first meeting and informed the team that their project would be short-lived because the obvious solution to the time-onhold problem was to add more phone lines. With this advice as a basis, the team crafted a problem statement: "Additional phone lines are needed in order to reduce the average customer time-on-hold from 6.2 minutes to our target of 45 seconds". Which of the following best describes the problem statement? a. The statement is too broad to be useful in the particular situation. b. The statement contains a solution. c. The statement is not related to the problem described above. d. This is a good problem statement.e. The statement does not fully define "time-on-hold". - answer-Answer B