Which of the following charts is a mathematical diagram used to values for two variables for a set of data?

Question

Options

• AHistogram
• BFishbone
• CGantt
• DScatter

• A
  2% (1)
• B
  2% (1)
• C
  5% (2)
• D
  90% (37)

Explanation

A scatter diagram (also called a scatter plot or scatter chart) is specifically designed to plot values for two variables simultaneously, displaying the relationship or correlation between them. Each data point represents one observation with coordinates on both an X-axis and a Y-axis. It is a core quality management tool used to identify whether a correlation exists between two factors. Option A (histogram) displays the frequency distribution of a single variable. Option B (fishbone/Ishikawa diagram) is a cause-and-effect analysis tool, not a data plotting chart. Option C (Gantt chart) displays a project schedule with tasks plotted against time - it is a schedule management tool, not a two-variable data analysis chart.

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