# Ch 2: Summarizing Data

Watch online statistics video lessons and learn about unimodal distributions, standard deviation, skewness and more. These video lessons are short and engaging and make learning easy!

## Summarizing Data - Chapter Summary and Learning Objectives

Whether you need to review the processes for ordering and ranking data or the measures used to describe the dispersal of numbers in a data set, this chapter's instructors use plenty of examples, illustrations and sample problems to walk you through each of these concepts. Lessons included here are designed to introduce you to:

• Measures of central tendency
• Distribution shapes
• Linear transformations

Video Objectives
What is the Center in a Data Set? - Definition, Lesson & Quiz Understand the concept of 'center' in a data set.
Mean, Median & Mode: Measures of Central Tendency Learn to differentiate between these measures of central tendency.
How to Calculate Mean, Median, Mode & Range Get examples of mean, median, mode and range. Learn how to calculate these measures.
Calculating the Mean, Median, Mode & Range: Practice Problems, Lesson & Quiz Practice finding the mean, median, mode and range when presented with a data set.
Visual Representations of a Data Set: Shape, Symmetry & Skewness Describe the shape of a set of data using visual representations.
Unimodal & Bimodal Distributions: Definition, Examples & Quiz Learn how to distinguish unimodal distributions from bimodal distributions.
The Mean vs. the Median: Differences, Uses, Lesson & Quiz Understand the differences between the mean and median and know when to use each.
Spread in Data Sets: Definition, Example, Lesson & Quiz Examine the concept of spread in data sets.
Maximums, Minimums & Outliers in a Data Set: Lesson & Quiz Find out how to determine the maximum, minimum and outliers in a data set.
Quartiles & the Interquartile Range: Definition, Formulate & Examples Discover steps for determining quartiles and the interquartile range.
Finding Percentiles in a Data Set: Formula, Examples & Quiz Explore the uses of percentiles and learn how to find these values in a data set.
Standard Deviation and Shifts in the Mean Follow the steps involved in finding the standard deviation. Learn how it can be used to determine a data set's distribution.
The Effect of Linear Transformations on Measures of Center & Spread: Lesson & Quiz Understand what a linear transformation is. Find out how it affects measures of center and spread.
Population & Sample Variance: Definition, Formula & Examples Get tips for finding the variance and learn how to differentiate between population and sample variances.
Ordering & Ranking Data: Process, Example, Lesson & Quiz Explore the processes used to order and rank data.

15 Lessons in Chapter 2: Summarizing Data
Test your knowledge with a 30-question chapter practice test
Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
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