Mean Absolute Deviation, Variance, & Standard Deviation

In this video I explain how to use mean deviation, mean absolute deviation, variance, and standard deviation to assess dispersion in interval or ratio level data. I discuss each concept and practice calculating with a sample set of data, and then consider why it's so important to estimate the parameters of the population.

[@mrshodz]

Good explanation. You are the third person that has related the squaring of values to the bell curve distribution.👍

[@basic7256]

The best video on SD, MAD, and Variance. Thank you!

[@PsychExamReview]

Thanks, glad you liked it!

[@mortyk182]

Your explanation was great. This video made me want to go and check out your entire playlist on statistics.

[@PsychExamReview]

Thanks, hope you enjoy the other videos, I'll continue adding more soon. Let me know if you have any questions!

[@Dr.Neurosurgeon]

Thank You!

[@PsychExamReview]

You're welcome!

[@sunl6564]

Thanks!

[@PsychExamReview]

You're welcome!

[@xcalibur070]

explained beautifully

[@PsychExamReview]

Thanks!

[@user-qi4fq3gz6d]

but why not n-2,n-3....?

[@PsychExamReview]

Great question, I explain this in more detail here: ruclips.net/video/ke8nSbXUJjQ/видео.html