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2 cards from this section. Quick, good the night before a test.
What is a frequency distribution?
Think about how we can count scores.
Why might we use unequal classes?
Consider situations where there's a large range of values.
What is a frequency distribution used for?
Think about the purpose of the distribution.
True or False: Bivariate frequency distribution can analyze the interaction between two variables.
Consider what happens when you study multiple aspects.
A company collects data on employee salaries. The data ranges from 20,000 to 500,000, with most salaries around 40,000 to 60,000. Design a frequency distribution with unequal classes highlighting the concentration of salaries.
Focus on where the bulk of the data lies.
Using a dataset of advertisement spend and resulting sales, calculate the correlation. Create and analyze a bivariate frequency distribution from the data.
Consider how increasing ad spend relates to sales outcomes.
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