Subsection 9.4 Quick Reference to ISCAM R Workspace Functions and R Commands
| Procedure Desired | Menu |
|---|---|
| Graphs of quantitative data |
iscamdotplot(x, xlab, main) hist(x, xlab, main) boxplot(x, ylab, horizontal=T) or iscamboxplot
|
| Numerical summaries | iscamsummary(x, digits) |
| Normal probability plots |
iscamaddnorm(x, xlab, main, breaks) qqnorm(x, datax = T) qqline(x, datax = T)
|
| Critical values from \(t\)-distribution | iscaminvt(prob, df, direction) |
| Carry out the One Sample \(t\)-procedures |
t.test(x, mu, alternative, conf.level) iscamonesamplet(xbar, sd, n, hypothesized, alternative, conf.level)
|
| Prediction interval | predict(lm(y ~ 1), newdata = data.frame(var = 0), interval = "predict") |
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