Digital SAT Math
Lesson Plan
Two-way frequency tables
Goals / Objectives
Answer questions about two categorical variables from a two-way frequency table by locating the count and choosing the total the question refers to
Complete a two-way table from given cells and totals, or from a description
Compute joint, marginal and conditional relative frequencies from a table of counts or of percents, and find a count from a relative frequency and its whole
Decide whether two categorical variables are associated by comparing conditional relative frequencies between groups
Standards
"Use one- and two-way tables, area models, and other representations to find relative frequency, probabilities, and conditional probabilities." "• Calculate, express, or interpret the probability or conditional probability of an event using a data display showing frequencies for a single variable, a two-way table, an area model, or a description of a situation. Infrequently, given a probability, determine an unknown number in a data display showing frequencies for a single variable, a two-way table, or a description of a situation, including using a probability to determine the frequency of an event."
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