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Discrete random variables

Discrete random variables · Diagrams · Complete reading

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A running average from the printed coin experiment

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Teacher PDF 8 exact running-average plot: horizontal 0–100 tosses, vertical 0–1, one hundred open blue circles fluctuate early then settle near one half. Student copy has blank axes. Source points preserved rather than simulated.
Teacher PDF 8 exact running-average plot: horizontal 0–100 tosses, vertical 0–1, one hundred open blue circles fluctuate early then settle near one half. Student copy has blank axes. Source points preserved rather than simulated.
Teacher PDF 8 exact running-average plot: horizontal 0–100 tosses, vertical 0–1, one hundred open blue circles fluctuate early then settle near one half. Student copy has blank axes. Source points preserved rather than simulated.
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The same centre with different spreads

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Four source panels traced as native SVG: n=5,35,70,100, each centred at 0 with x ticks −2,−1,0,1,2; histogram, red narrow curve and broad black curve retained. Vertical label dnorm(x); labelled ticks are 0,.2,.4,.6,.8 for n5;0,.5,1,1.5,2 for n35;0,1,2,3 for n70;0,1,2,3,4 for n100. Compare horizontal spread, not heights across different scales. Printed attribution: University of Pennsylvania.
Four source panels traced as native SVG: n=5,35,70,100, each centred at 0 with x ticks −2,−1,0,1,2; histogram, red narrow curve and broad black curve retained. Vertical label dnorm(x); labelled ticks are 0,.2,.4,.6,.8 for n5;0,.5,1,1.5,2 for n35;0,1,2,3 for n70;0,1,2,3,4 for n100. Compare horizontal spread, not heights across different scales. Printed attribution: University of Pennsylvania.
Four source panels traced as native SVG: n=5,35,70,100, each centred at 0 with x ticks −2,−1,0,1,2; histogram, red narrow curve and broad black curve retained. Vertical label dnorm(x); labelled ticks are 0,.2,.4,.6,.8 for n5;0,.5,1,1.5,2 for n35;0,1,2,3 for n70;0,1,2,3,4 for n100. Compare horizontal spread, not heights across different scales. Printed attribution: University of Pennsylvania.
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