Chapter 1
Algebra
Course: Sat Prep
Subject: Math
Chapter: Problem Solving And Data Analysis
One-variable data analysis helps organize, summarize, and interpret information collected for a single characteristic or measurement. By using statistical measures, you can identify patterns, describe the center and spread of data, and draw meaningful conclusions from numerical information.
In this lesson, you will learn how to:
- Calculate and interpret the mean, median, and mode.
- Determine the range and standard deviation of a data set.
- Describe the center and spread of one-variable data.
- Interpret the shape and distribution of data.
- Identify patterns, clusters, and possible outliers.
- Apply statistical measures to analyze and solve real-world problems.
Mean
The mean, commonly called the average, is one of the most frequently used measures of the center of a data set. It represents the value that would result if the total of all observations were distributed equally among every observation. Rather than identifying the most common value or the middle value, the mean considers every number in the data set, making it a comprehensive measure of central tendency.