Plot q q q 2 q q q q q q qq q q q q q q q qq qq q qq

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Unformatted text preview: qq qq qq q q q qq q qq q q q qq qq qq q qq qq qq q q q q qq q qq q q q q q q q q qqq qq q 2 q q q qq qq q q q q q qq q q q q q q qq qq q q qq q qq qq qq qq q q qq qq q q q q q q q q −1 0 q q q q q q qq q qq −1 q 0 q q qq Sample Quantiles q 0 q qq q q q qqq qqq q qq q q q qq q qq q qq q q q q q q qq −1 q Sample Quantiles 1 qq q q 1 q q Sample Quantiles q qq q q q qq −2 qq qq q q qq q −1 0 1 Theoretical Quantiles 20 q qq q q q qq qq q −2 −2 q q q q q −2 q q qq q q 2 −2 −1 0 1 Theoretical Quantiles 2 q q q q −2 −1 0 1 Theoretical Quantiles 2 q Box Plots boxplot(Reaction~Station+Shift, data=ReactionTime,cex.axis=.5) 300 250 q q q q q q q q q q q q q q q q q q 0 50 100 150 200 q ST63.A 21 q q q q ST64.A ST65.A ST63.B ST64.B ST65.B ST63.C ST64.C ST65.C ST63.D ST64.D ST65.D Comments on Box Plot The horizontal box lines ≡ 3 quartiles Q (.25), Q (.5), Q (.75). The dashed vertical lines extend to the adjacent values. Compute the interquartile range IQR = Q (.75) − Q (.25). The upper adjacent value is the largest observation ≤ Q (.75) + 1.5 × IQR The lower adjacent value is the largest observation ≥ Q (.75) − 1.5 × IQR Points beyond adjacent values shown individually (outliers?) For N (µ, σ ) ≈ .35% are beyond each adjacent value. data=ReactionTime ⇒ simpler reference to variables. Reaction ~ Station + Shift implies boxplots for all factor combinations of Station and Shift. 2 22 Controlling Plot Options Many graphics functions allow ne tuning control as follows. Plot dimensions are controlled by xlim=c(a,b) and ylim=c(c,d), using your a,b,c,d. Axis labels are controlled by xlab="your x-label" and ylab="your y-label". Set the main plot title by main="Your Main Title". Set the plot sub title by sub="Your Sub Title". See par for many graphics control options, like cex, cex.axis, cex.main, cex.sub character expansion factors. col, col.axis, col.lab, col.main, col.sub specifying colors. font, font.axis, font.lab, font.main, fo...
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