Against All Odds: Inside Statistics

November 2017
09:00

Season 1, Episode 12 (Two-way Tables)

3.0 8 x
One city surveyed the happiness of its residents. Two-way tables help organise the data and tease out relationships between happiness levels and opinions about aspects of the city itself.
10:00

Season 1, Episode 11 (Correlation)

3.0 3 x
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)

3.0 8 x
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.
October 2017
08:00

Season 1, Episode 9 (Scatterplots)

3.0 7 x
Plotting annual numbers of Florida powerboat registrations and manatee killings suggests an uncomfortable relationship for the marine mammals.
10:00

Season 1, Episode 8 (Checking Assumption Of Normality)

4.0 8 x
Production at Pete and Gerry's Organic Eggs provides a number of distributions that look normal - but are they?
12:00

Season 1, Episode 7 (Normal Calculations)

4.0 4 x
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.
11:00

Season 1, Episode 6 (Normal Curves)

3.0 3 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.
September 2017
09:00

Season 1, Episode 5 (Standard Deviation)

4.0 7 x
How can we compare sales at two franchises in the Wahoo's restaurant chain? Standard deviation helps us quantify the variability in sales.
09:00

Season 1, Episode 4 (Boxplots)

4.0 5 x
Using the example of hot dog calorie counts, we use boxplots to visualise the five-number summary and make comparisons between different types of frankfurters.
08:00

Season 1, Episode 3 (Measures Of Center)

3.0 3 x
It's helpful to know the centre of a distribution - which is what the clerical workers in Colorado Springs found out in the 1980s when they campaigned for comparable wages for comparable work.
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