# Ch 3: Statistics Overview

Watch online video lessons to learn about random sampling, frequency tables, standard deviations and more. Each lesson is accompanied by a short multiple-choice quiz to help check your understanding of these statistics topics.

## Statistics - Chapter Summary and Learning Objectives

Statistics is the branch of math that deals with the collection and analysis of data. The lessons in this chapter will teach you how to gather samples, calculate averages and create tables. After completing this chapter, you should be able to:

• Understand the conditions that make a sample random
• Calculate mean, median, mode and range
• Interpret standard deviations
• Find the minimums, maximums and outliers in a data set
• Create histograms

Video Objective
Descriptive & Inferential Statistics: Definition, Differences & Examples Learn the differences between descriptive and inferential statistics
What's the Difference between Populations & Samples? - Lesson & Quiz Learn the difference between a sample and a population
What is Random Sampling? - Definition, Conditions & Measures Look at the conditions that need to be met for a sample to be random
Simple Random Samples: Definition & Examples Learn how to recognize simple random samples
Stratified Random Samples: Definition, Characteristics & Examples Learn how to recognize stratified random samples
Cluster Random Samples: Definition, Selection & Examples Learn how to recognize cluster random samples
Systematic Random Samples: Definition, Formula & Advantages Learn how to recognize systematic random samples
How to Calculate Mean, Median, Mode & Range Learn how to find the mean, median, mode and range of a data set
Calculating the Mean, Median, Mode & Range: Practice Problems, Lesson & Quiz Practice finding the mean, median, mode and range of a data set
Population & Sample Variance: Definition, Formula & Examples Explore the differences between a population and sample variance
Standard Deviation and Shifts in the Mean Learn how to interpret standard deviation and look at ways a shift in the mean can impact it
Maximums, Minimums & Outliers in a Data Set: Lesson & Quiz Learn how to determine minimums, maximums and outliers in data sets
Quartiles & the Interquartile Range: Definition, Formulate & Examples Learn how to determine quartiles and the interquartile range
Finding Percentiles in a Data Set: Formula, Examples & Quiz Calculate percentiles in a data set
Frequency & Relative Frequency Tables: Definition & Examples Calculate frequency and make relative frequency tables
Cumulative Frequency Tables: Definition, Uses & Examples Learn how to make cumulative frequency tables
How to Calculate Percent Increase with Relative & Cumulative Frequency Tables Use relative and cumulative frequency tables to calculate percent increase
Creating & Interpreting Histograms: Process & Examples Learn how to create and interpret histograms

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.
Not Taken

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