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May 2026 CPHQ Prep Virtual Class
CPHQ Virtual Live Review Course | Video: Scatter D ...
CPHQ Virtual Live Review Course | Video: Scatter Diagrams
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Video Transcription
Video Summary
A scatter diagram (scatter plot) is an X‑Y graph used to explore the possible relationship (correlation) between two variables. Each dot represents paired data for the same subject, with the independent “driver” on the X axis and the dependent “follower” on the Y axis. To create one, define a question, collect meaningful paired samples (often 50+ points), scale axes to the data range, and plot all points. Patterns indicate correlation: upward trend = positive, downward = negative, no pattern = none; relationships can be non‑linear. Outliers and stratifying by groups can reveal important insights about potential cause-and-effect.
Keywords
scatter plot
correlation analysis
independent and dependent variables
data visualization
outliers
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