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The TTEST Procedure

ODS Graph Names

To request graphics with PROC TTEST, you must first enable ODS Graphics by specifying the ODS GRAPHICS ON statement. See Chapter 21, Statistical Graphics Using ODS, for more information. You can reference every graph produced through ODS Graphics with a name. The names of the graphs that PROC TTEST generates are listed in Table 93.6, along with the required statements and options.

Table 93.6 ODS Graphics Produced by PROC TTEST

ODS Graph Name

Plot Description

Option

AgreementOfPeriods

Plot of period 2 against period 1 response values for an AB/BA crossover design

VAR / CROSSOVER
PLOTS=AGREEMENT(TYPE=PERIOD)

AgreementOfTreatments

Plot of second treatment against first treatment response values for an AB/BA crossover design

VAR / CROSSOVER
PLOTS=AGREEMENT

AgreementPlot

Plot of second response against first response for a paired design

PAIRED statement
PLOTS=AGREEMENT

BoxPlot

Box plots, also with confidence band for one-sample or paired design

PLOTS=BOX
PLOTS=SUMMARY(UNPACK)

Histogram

Histograms with overlaid kernel densities, and also normal densities if DIST=NORMAL

PLOTS=HISTOGRAM
PLOTS=SUMMARY(UNPACK)

Interval

Confidence intervals for means

PLOTS=INTERVAL

ProfilesOverPrd

Plot of response profiles over periods 1 and 2 for an AB/BA crossover design

VAR / CROSSOVER
PLOTS=PROFILES(TYPE=PERIOD)

ProfilesOverTrt

Plot of response profiles over first and second treatments for an AB/BA crossover design

VAR / CROSSOVER
PLOTS=PROFILES

ProfilesPlot

Plot of response profiles over first and second response values for a paired design

PAIRED statement
PLOTS=PROFILES

QQPlot

Normal quantile-quantile plots

PLOTS=QQ

SummaryPanel

Histograms with overlaid kernel densities (and also normal densities if DIST=NORMAL) and box plots (and also with confidence band for one-sample or paired design)

PLOTS=SUMMARY

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