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Question 209 - CSCP discussion

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An operations manager wants to measure variability in the delivery time of insurance policies to clients. Which of the following quality tools most appropriately would show the level of variability?

A.
Pareto chart
Answers
A.
Pareto chart
B.
Histogram
Answers
B.
Histogram
C.
Scatterplot
Answers
C.
Scatterplot
D.
Check sheet
Answers
D.
Check sheet
Suggested answer: B

Explanation:

A histogram is the most appropriate quality tool to measure variability in the delivery time of insurance policies to clients because:

Distribution Visualization: A histogram displays the distribution of data points, showing how delivery times are spread out. This helps in understanding the range and frequency of delivery times.

Identifying Variability: It allows for easy visualization of the level of variability or dispersion in the delivery times, highlighting any inconsistencies or outliers in the process.

Data Analysis: Histograms provide a clear picture of the central tendency, spread, and shape of the data distribution, which is crucial for identifying patterns and potential areas for improvement.

Decision Making: By showing the distribution of delivery times, a histogram helps the operations manager make informed decisions about process adjustments to reduce variability and improve consistency.

A Pareto chart (Option A) is used to prioritize problems based on their frequency or impact. A scatterplot (Option C) shows relationships between two variables, not the distribution of one. A check sheet (Option D) is used for data collection and not for showing variability in data.

'Statistical Quality Control: A Modern Introduction' by Douglas C. Montgomery.

'The Six Sigma Handbook' by Thomas Pyzdek and Paul Keller.

asked 16/09/2024
Scott Lerch
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