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How do you throw out the “impossible” or “really strange” values using R?

How do you throw out the “impossible” or “really strange” values using R?

Math   Statistics-And-Probability   
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Answer #1

The following are some useful command to throw out impossible value.

  • If data are included impossible value then make it NA i.e R will change with NA ( not a number)
  • >is.na() .....to check presence of NA values
  • >na.omit() ......to omit data from NA
  • >na.exclude() .....not contain NA
  • >na.pass()...... Data ignore NA
  • >na.fail() .....if NA present then failed to further process
  • >outlier.replace(model, value=NA)......to replace outliers with NA
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