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Ch 3: Descriptive Statistics: Measurement

About This Chapter

Our helpful mobile-friendly chapter on the measurement of descriptive statistics is easy to use and understand. Feel free to use these professionally-designed lessons and quizzes to study for an exam, learn something new or complete your homework.

Descriptive Statistics: Measurement - Chapter Summary

These informative lessons on descriptive statistics cover how to calculate an arithmetic mean, measures of central tendency, the interquartile range and much more. Each fun lesson is accompanied by a multiple-choice quiz so you can test your knowledge after reviewing the material. Or, take the quiz before you work through the lesson as a great test prep exercise. Around-the-clock access makes it easy to study whenever your schedule permits. After completing this chapter, you will be ready to do the following:

  • Utilize the formulas for arithmetic and geometric mean
  • Calculate median, mode, mean and range
  • Define quartiles and the interquartile range
  • Share examples of deciles in a data set
  • Find percentiles in a data set
  • Explain how to use the IF function in Excel
  • Exhibit knowledge of the measures of central tendency

8 Lessons in Chapter 3: Descriptive Statistics: Measurement
Test your knowledge with a 30-question chapter practice test
Measures of Central Tendency: Definitions & Practice

1. Measures of Central Tendency: Definitions & Practice

After watching this video, you will be able to explain the meaning of the terms central tendency, mode, mean and median. You will also be able to calculate these three values from provided data. A short quiz will follow.

Arithmetic Mean: Definition, Formula & Example

2. Arithmetic Mean: Definition, Formula & Example

In this lesson, we will learn about the arithmetic mean, which is a quantity that is used in a wide variety of applications, such as science, engineering, medicine, statistics and finance.

Geometric Mean: Definition and Formula

3. Geometric Mean: Definition and Formula

Watch this video lesson to learn how different the geometric mean is from the arithmetic mean, or average, that we are all so familiar with. Learn in what circumstance the geometric mean is preferred. Also, learn the formula and how to use it.

How to Calculate Mean, Median, Mode & Range

4. How to Calculate Mean, Median, Mode & Range

Measures of central tendency can provide valuable information about a set of data. In this lesson, explore how to calculate the mean, median, mode and range of any given data set.

Quartiles & the Interquartile Range: Definition, Formulate & Examples

5. Quartiles & the Interquartile Range: Definition, Formulate & Examples

Quartiles and the interquartile range can be used to group and analyze data sets. In this lesson, learn the definition and steps for finding the quartiles and interquartile range for a given data set.

Deciles in a Data Set: Definition, Formula & Examples

6. Deciles in a Data Set: Definition, Formula & Examples

When faced with large amounts of data, it's often useful to group the data prior to further analysis. Given that we work with a base ten number system, it's logical that we might want to use divisions of 10, or deciles, as a basic form of numerical grouping.

Finding Percentiles in a Data Set: Formula & Examples

7. Finding Percentiles in a Data Set: Formula & Examples

Percentiles are often used in academics to compare student scores. Finding percentiles in a data set can be a useful way to organize and compare numbers in a data set.

Using the IF Function in Excel

8. Using the IF Function in Excel

After watching this video lesson, you will learn how you can use the IF function in Excel to help you analyze your data to get the results that you want. Learn how you can use the IF function and how to set it up.

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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