Filetype Power Point PPTX | Posted on 29 Aug 2022 | 4 years ago
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389x Filetype PPTX File size 0.61 MB Source: faculty.cas.usf.edu
Questions
• Define
–Mean
–Median
–Mode
• What is the effect of distribution shape
on measures of central tendency?
• When might we prefer one measure of
central tendency to another?
Questions (2)
• Define
– Range
– Average Deviation
– Variance
– Standard Deviation
• When might we prefer one measure of
variability to another?
• What is a z score?
Variables have distributions
• A variable is something that changes or
has different values (e.g., anger).
• A distribution is a collection of
measures, usually across people.
• Distributions of numbers can be
summarized with numbers (called
statistics or parameters).
Central Tendency refers to the
Middle of the Distribution
Variability is about the Spread
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