Data Analysis
Chance and Uncertainty
Program of Studies
Statistics: The science of collecting, analyzing, visualizing, and interpreting data can inform understanding and decision making.
How might frequency bring meaning to data?
Students analyze frequency in categorical data.
Knowledge
Frequency can be compared across categories to answer statistical questions. The mode is the category with the highest frequency.
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Understanding
Frequency is a count of categorized data, but it is not the data value itself.
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Skills and Procedures
Examine categorized data in tables and graphs. Determine frequency for each category of a set of data by counting individual data points. Identify the mode in various representations of data. Recognize data sets with no mode, one mode, or multiple modes. Justify possible answers to a statistical question using mode.
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Data can be collected by asking closed-list and open-ended questions. Closed-list questions provide a list of possible responses to choose from. Open-ended questions allow any response. Responses can be categorized in various ways. Representations of frequency can include bar graphs dot plots stem-and-leaf plots
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Frequency can be a count of categorized responses to a question. Frequency can be used to summarize data. Frequency can be represented in various forms.
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Discuss potential categories for open-ended questions and closed-list questions in relation to the same statistical question. Formulate closed-list questions to collect data to answer a statistical question. Categorize data that was collected using closed-list questions. Organize counts of categorized data in a frequency table. Create various representations of data, including with technology, to interpret frequency.
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