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- A café's espresso machine pulls shots that last a mean of 26 seconds, with a standard deviation of 2 seconds.
- A post office weighed 8 letters, in grams:
- An orchard reports that its apples this season have a mean weight of 180 g and a standard deviation of 15 g.
- Five judges each give a skater a whole-number score from 0 to 10.
- A bike-share station logged eight rides, in minutes:
- Luis took five quizzes.
- Two runners timed their last six 400 m races, in seconds.
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Interpreting a standard deviation: the lesson ›More Chapter 1 worksheets: Exploring one-variable data
- 1.1Types of data: categorical, numerical, discrete, continuous
- 1.2Making a histogram and choosing the bin width
- 1.3Describing a distribution
- 1.4Quartiles and the five number summary
- 1.5Computing a standard deviation, sample and population
- 1.6Interpreting a standard deviation
- 1.7Resistant and non resistant measures
- 1.8Box plots that show outliers
- 1.9Comparing two distributions
- 1.10Shifting and rescaling a data set
- 1.11z-scores and the empirical rule
- 1.12The normal distribution
- 1.13Normal calculations: areas and percentiles
- 1.14Cumulative frequency graphs and percentiles