157x Filetype PPT File size 0.31 MB Source: www.crsd.org
You will be able to know, explain and use the following vocabulary: Individual Count Variable Percent Categorical Variable Bar Graph Quantitative Variable Pie Chart Distribution Dotplot Exploratory Data Stemplot Analysis Center, Spread, Shape Outlier Here are some definitions: Individual : Objects described by a set of data. They may be people, animals, things, etc. Variable : Any characteristic of an individual. The variable will likely take on different values for different individuals. (Can you think of some more examples?) … more definitions: Categorical Variable : A variable which focuses on a characteristic of an individual, allowing it to be placed into one of several groups or categories. Quantitative Variable : A variable which focuses on a characteristic of an individual that takes on numerical values for which arithmetic operations can be performed. (Can you think of some more examples?) … more definitions: Distribution : a way of demonstrating what values a variable take on and how often it takes each value. Exploratory Data Analysis : Using statistical tools to examine data and describe its main features. Comparing variables, providing graphs and doing numerical summaries are specific strategies. … more definitions: Count : The number of observations that fall into a particular category, when analyzing individuals with a categorical variable. Percent : The percentage of observations that fall into a particular category, when analyzing individuals with a categorical variable. This is found by dividing the count by the total number of observations.
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