2.1 CATEGORICAL VARIABLES

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Last updated 4:08 AM on 10/1/26
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7 Terms

1
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What are descriptive statistic?

summarizing and visualizing variables and relationships between two variables is often known as descriptive statistics or exploratory data analysis

2
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what is Proportion?

The proportion in some category is found by

  • proportion in a category = number in that category/total number


3
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what is the notation for proportion in a POPULATION?

  • the proportion for a population is denoted by p


4
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what is the notation for proportion in a SAMPLE?

  • the proportion for a sample is denoted by a p (hat)


5
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What is a relative frequency table?

is a data chart that shows the proportion, decimal, or percentage of total observations that fall into each category, instead of just raw count numbers.

6
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What is a two-way table?

is a statistical tool used to organize and display the frequencies or counts for two categorical variables

7
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What is a frequency table?

is a chart that lists items or groups of items and shows how many times each one appears in a dataset.