Measures of Central Tendency and Dispersion


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    • How Do You Find the Mean of a Data Set?How Do You Find the Mean of a Data Set?

    How Do You Find the Mean of a Data Set?

    Mean is just another name for average. To find the mean of a data set, add all the values together and divide by the number of values in the set. The result is your mean! To see an example of finding the mean, watch this tutorial!

    • How Do You Find the Median of a Data Set?How Do You Find the Median of a Data Set?

    How Do You Find the Median of a Data Set?

    The median of a data set is the number that is the middle value of the set. It's easy to find the median if you first put the numbers in order from least to greatest. In this tutorial, see how to find the median of a data set, and see what to do if there are two middle values!

    • How Do You Find the Mode of a Data Set?How Do You Find the Mode of a Data Set?

    How Do You Find the Mode of a Data Set?

    The mode of a data set is the number that occurs most frequently in the set. To easily find the mode, put the numbers in order from least to greatest and count how many times each number occurs. The number that occurs the most is the mode! Follow along with this tutorial and see how to find the mode of a set of data.

    • How Do You Find the Range of a Data Set?How Do You Find the Range of a Data Set?

    How Do You Find the Range of a Data Set?

    The range of a data set is the difference between the largest number and the smallest number. In this tutorial, you'll see how to find the range of a set of data. Check it out!

    • How Do You Find the Mode of a Data Set When There is More Than One Mode?How Do You Find the Mode of a Data Set When There is More Than One Mode?

    How Do You Find the Mode of a Data Set When There is More Than One Mode?

    The mode of a data set is the number that occurs most often, but what if your data set has more than one mode? Is that possible? This tutorial explains what to do when a data set has multiple modes!

    • How Do You Find the Mode of a Data Set Where All The Numbers are Different?How Do You Find the Mode of a Data Set Where All The Numbers are Different?

    How Do You Find the Mode of a Data Set Where All The Numbers are Different?

    To find the mode of a data set, look for the number that occurs most often. What if all the numbers occur the same number of times? What's the mode of that data set? This tutorial will tell you!

    • How Do You Make a Box-and-Whisker Plot?How Do You Make a Box-and-Whisker Plot?

    How Do You Make a Box-and-Whisker Plot?

    A box-and-whisker plot can help you get a better picture of what your data looks like visually. This tutorial shows you the step-by-step process for making a box-and-whisker plot!

    • How Do You Compare the Mean and Median of Data Sets Using a Line PlotHow Do You Compare the Mean and Median of Data Sets Using a Line Plot

    How Do You Compare the Mean and Median of Data Sets Using a Line Plot

    The mean and median can help you better understand a data set. Check out this real world example involving finding and comparing the mean and median of multiple data sets.

    • How Do You Find the Minimum, Maximum, Quartiles, and Median of a Data Set?How Do You Find the Minimum, Maximum, Quartiles, and Median of a Data Set?

    How Do You Find the Minimum, Maximum, Quartiles, and Median of a Data Set?

    Finding the minimum, maximum, median, and quartiles of a set of data can help tell you a lot about your data. Follow along with this tutorial to practice finding these pieces of a data set!

    • How Do You Compare Two Data Sets Using Box-and-Whisker Plots?How Do You Compare Two Data Sets Using Box-and-Whisker Plots?
    • What is the Median of a Data Set?What is the Median of a Data Set?

    What is the Median of a Data Set?

    The median is one of many measures of central tendency. Check out this tutorial to learn what the median is and how you can find it!

    • What is the Mode of a Data Set?What is the Mode of a Data Set?

    What is the Mode of a Data Set?

    Finding the mode of a set of data can help you understand the data better. This tutorial introduces you to mode and shows you how to find this helpful measure of central tendency!

    • What is the Mean of a Data Set?What is the Mean of a Data Set?

    What is the Mean of a Data Set?

    When you think of the mean of a data set, think of the word average. 'Mean' and 'average' are the same thing when you're talking about a set of data! This tutorial introduces you to mean and shows you how to find it!

    • What is the Interquartile Range?What is the Interquartile Range?

    What is the Interquartile Range?

    Being able to disect a set of data and better understand it is a key part of mastering statistics. This tutorial teaches you about one of these disection tools called the interquartile range.

    • What is a Box-and-Whisker Plot?What is a Box-and-Whisker Plot?
    • What is a Weighted Average?What is a Weighted Average?

    What is a Weighted Average?

    A weighted average is a special type of average that allows you to give special weights to the different values in your average. Learn more about weighted averages by watching this tutorial!

    • How Do You Find an Average?How Do You Find an Average?

    How Do You Find an Average?

    What is the average temperature outside today? What is the average amount of time it takes you to do your homework? What is the average price for a gallon of gas? To figure out how to find the average to just about anything, check out this tutorial about averages!