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Dataplot Graphics Gallery - LAG PLOT

Dataplot

Lag Plot Top Prev Next
LAG PLOT Y

Sample lag plot

  • Question:
    Random?
    Serial Autocorrelation?
    Outliers?

  • Definition:
    Vertical Axis: Y(i): i-th observation
    Horizontal Axis: Y(i-1): (i-1)st observation

  • Interpretation/Conclusion:
    Non-random
    Oscillatory
    Single-cycle sinusoidal model
    2 outliers

  • NIST/SEMATECH Handbook Chapter:
    1. Process/Product Exploration

  • Reference:
    Filliben ...
    Author 2

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

Dataplot Reference Manual Documentation
for LAG PLOT (requires Adobe Acrobat Reader)

Date created: 6/5/2001
Last updated: 7/6/2001
Please email comments on this WWW page to alan.heckert@nist.gov.