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Sample 4-Plot

  • Question:
    Shift in location?
    Shift in variation?
    Random?
    What distribution?
    Outliers?

  • Definition:
    Vertical Axis: Response
    Horizontal Axis: Index

  • Interpretation/Conclusion:
    Fixed Location (no drift)
    Fixed variation
    Non-Random
    Oscillatory
    Non-normal & U-shaped distribution

  • NIST/SEMATECH Handbook Chapter:
    1. Exploratory Data Analysis

  • Reference:
    Filliben

Dataplot Command: 4-PLOT Y
Dataplot Code:
SKIP 25
READ XXX.DAT Y
4-PLOT Y

Dataplot Reference Manual Documentation for 4-PLOT

Date created: 06/05/2001
Last updated: 02/13/2023
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