Measures of Variability (Variance, Standard Deviation, Range, Mean Absolute Deviation)

An introduction to measures of variability. I discuss the range, mean absolute deviation, variance, and standard deviation, and work through a simple example of calculating these quantities. I then discuss interpreting the standard deviation, including a brief discussion of the empirical rule.

In this video it is assumed that we are dealing with sample data, and not data representing the entire population. This will be the case the vast majority of the time in practice.

[rampage]

Thank you so much. I've got mere hours till my mid term and you are saving my life :D

[Ghostithiz]

Thank you so much this was easy to understand since I was confused from my textbook

[Daddjess]

you have literally saved me from failing college tysm

[brandonsingh]

Thank you for the lectures, Getting a good start on the 10-12 hours per week :)

[choiyeonjun]

Thankyou so much! This is a really big help since I don't understand anything before ... My finals are tomorrow!!

[mellonkobugabe]

Man, i don't know what i will do for you but may God bless you for sure 🙏

[danicoleb]

Why go to lecture when I can come to YouTube to learn... 

[Sky]

THANK YOU! from all your DE students. If only there was a video on how to use R software...

[codewithchase]

This was very helpful and clear indeed for any beginner. Thanks a lot, cos I was lost and this just made put me at another level

[ra]

thanks for explaining the mean deviation in a simple way, cause i thought im going MAD about trying to find its meaning

[manaralghamdi]

Good job! Thank you for this AMAZING explanation

[DrOscarPacheco]

great explanation, and a perfect clean speaker voice at that!

[mjavadbakhshi]

SO COOL i have been understand these concepts for a first time correctly.

[adamuboy]

Blessed that he is my prof. What a lad. A guru!!

[sfbw]

You know statistics so well to explain it in a common language

[jrbloggins]

What font are you using? I'm getting flashbacks to linear algebra from 20 years ago from this font. It just screams maths to me lol

[txtstan]

are you this video? cuz i needed you right now (desperate to get grades up rizz)

[voramuj]

Great explanation.
Thank you for your videos.

[kgomotsegodikago]

great just the way we are taught in here

[saastalkonly]

Thank you So much... It is really very Helpful