InspireStatMath

InspireStatMath - HowisStatisticsDifferent...

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How is Statistics Different  from Mathematics, and  Why Should Teachers Care? Allan Rossman and Beth Chance Cal Poly - SLO
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2 Context matters 220 170 120 220 170 120 weight (lbs) Weights of members of 2000 U.S. Men’s Olympic Rowing team
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3 40 30 20 10 125 115 105 95 85 75 65 55 Context matters Gesell (aptitude) score vs. age (in months) of first speaking 40 30 20 10 125 115 105 95 85 75 65 55 age of first speaking Gesell score
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4 Context matters Without outliers 20 15 10 120 110 100 90 80 age of first speaking Gesell score
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5 Context matters 0 0.05 0.1 0.15 0.2 0.25 0.3 under 3 3 4 5 6 7 8 9 10 11 12 above 12 level patients pamphlets Are the cancer pamphlets written at appropriate levels to be read and understood by the cancer patients?
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6 Measurement matters Unemployment Intelligence Highway safety Authoritarian personality Memory ability Ambidextrous-ness Teaching effectiveness Pace of life
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7 Measurement matters Is a geographic region’s “pace of life” associated with its heart disease rate? Average walking speed of pedestrians over a distance of 60 feet during business hours on a clear summer day along a main downtown street Average time a sample of bank clerks take to make change for two $20 bills or to give $20 bills for change Average ratio of total syllables to time of response when asking a sample of postal clerks to explain the difference between regular, certified, and insured mail
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8 Measurement matters 30 20 10 30 20 10 walk heart 35 25 15 30 20 10 bank 30 20 10 30 20 10 talk
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9 Data collection design matters “Ladies, do you give more emotional support to your husband or boyfriend than you receive in return?” Study A: 96% of a sample of 4500 said “yes” Study B: 44% of a sample of 767 said “yes” Which study do you have more confidence in?
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InspireStatMath - HowisStatisticsDifferent...

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