ITPEC FE Morning October 2019 Question 77
ITPEC FE Morning October 2019 — Question 77 of 80
Scatter Diagram (7 QC Tools) — identify the correct definition of a scatter diagram.
A scatter diagram plots data points on two numeric axes to reveal relationships, patterns, or trends between two variables (e.g., correlation between temperature and defect rate).
Why not others:
- (b) Describes a histogram, which shows frequency distribution of a single attribute.
- (c) Describes a Pareto chart, which combines descending bars with a cumulative line to highlight the most significant factors.
- (d) Describes a control chart, which tracks process stability over time using upper/lower control limits.
Key rule: Scatter diagram = two numeric variables plotted as dots to find correlation; it is one of the 7 QC (Quality Control) tools.
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