# 6 - Individual Object described by a set of data...

This preview shows page 1. Sign up to view the full content.

This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Individual: Object described by a set of data. Individuals may be people, but they may also be animals or things. Variable: Any characteristic of an individual. A variable can take different values for different individuals. Categorical variable: A variable that places each individual into a category. Quantitative variable: A variable that takes numerical values that measure some characteristic of each individual, like height in centimeters or salary in dollars per year. Exploratory data analysis: Use of graphs and numerical summaries to describe the variables in a data set and the relations among them. 1. Begin by examining each variable by itself. Then move on to study the relationships among the variables. 2. Begin with a graph or graphs. Then add numerical summaries of specific aspects of the data. Distribution: The values and the frequency of values taken by a variable. The values of a categorical variable are labels for the categories. The distribution of a categorical variable lists the categories and gives either the count or the percent of individuals who fall in...
View Full Document

## This note was uploaded on 02/27/2012 for the course STAT 121 taught by Professor Patticolling during the Winter '11 term at BYU.

Ask a homework question - tutors are online