Against All Odds: Inside Statistics

July 2019
12:00

Season 1, Episode 7 (Normal Calculations)

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Visit the Boston Beanstalks club for tall people. Height is normally distributed and we can use membership cutoffs and population data to calculate z-scores.
June 2019
11:00

Season 1, Episode 6 (Normal Curves)

3.0 1 x
A nature preserve that's tracked bird migrations through New England for decades records tons of bird-related data; everything from wingspan measurements to arrival dates provides examples of normal distributions.
09:00

Season 1, Episode 5 (Standard Deviation)

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How can we compare sales at two franchises in the Wahoo's restaurant chain? Standard deviation helps us quantify the variability in sales.
October 2018
09:00

Season 1, Episode 2 (Histograms)

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Meteorologists use histograms to map when lightning strikes and this visualisation technique helps them understand the data in new ways.
11:00

Season 1, Episode 1 (Stemplots)

3.0 7 x
As a first step in visualizing data, we use stemplots to understand measurements taken by the U.S. Army when they size up soldiers in order to design well-fitting gear and supplies for modern warfighters.
September 2018
10:00

Season 1, Episode 15 (Census And Sampling)

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The U.S. counts every resident every ten years - or at least tries to. Statisticians use sampling from a population as an alternative to a complete count, as utilised at a potato chip factory.
10:00

Season 1, Episode 14 (Designing Experiments)

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We move beyond observational studies - like one of marine life in the remote Line Islands - to designing experiments that manipulate various subject groups - as in the case of a medical study about osteoarthritis treatments.
August 2018
09:00

Season 1, Episode 16 (Sample And Surveys)

4.0 11 x
A visit to the University of New Hampshire Survey Centre illustrates how pollsters create accurate surveys. They can then use details from their sample to make inferences about a whole population.
10:00

Season 1, Episode 11 (Correlation)

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Twin studies track how similar identical and fraternal twins are on various characteristics, even if they don't grow up together. Correlation lets researchers put a number on it.
10:00

Season 1, Episode 10 (Fitting Lines To Data)

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Winter snowpack in the Colorado Rockies can predict spring water supply. Plotting annual measurements in a scatterplot lets resource managers draw a regression line that helps them forecast water availability.
Archive