# Ch 21: Dispersion & Probability Models

Get acquainted with dispersion and property models by reviewing fun video lessons. Boost your knowledge of how to calculate weighted average, the probability of permutations, the probability of combinations and more.

## Dispersion & Probability Models - Chapter Summary

This chapter can help enhance your understanding of dispersion and probability models with entertaining lessons developed by expert instructors. Review these lessons anytime to learn more about mean, median and mode, the measures of variability, the fundamental counting principle and other concepts. Doing so can ensure you're prepared for the following at the end of this chapter:

• Describing the mode, mean and median
• Discussing the relationship between range, variance and standard deviation
• Utilizing the formula for calculating weight average
• Identifying maximums, minimums and outliers in a data set
• Calculating the probability of combinations, permutations and independent and dependent events
• Defining the fundamental counting principle

The video lessons in this chapter average about 8 minutes each, simplifying the process of fitting your review into your busy schedule. Take advantage of the full transcript below the videos that offer easily identifiable vocabulary words that can deepen your understanding of dispersion and probability models. When ready, test your knowledge of these concepts by taking short lesson quizzes and a comprehensive chapter exam. Also, submit any questions you have about lesson topics to our experts.

8 Lessons in Chapter 21: Dispersion & Probability Models
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.
Not Taken

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