Uploaded July 2019 | Updated September 2026, 2 weeks ago
One of the most basic things we do all the time in Data Analysis (i.e. Statistics, Machine Learning or any other sort of number crunching type thing) is calculate the mean, variance and standard deviation. This StatQuest walks you through these tasks and help you avoid a very common pitfall that is all too easy to fall into.
NOTE: This StatQuest assumes are already familiar with...
...Histograms: youtu.be/qBigTkBLU6g
...Statistical Distributions: youtube.com/watch?v=oI3hZJqXJuc
...the Normal Distribution: youtu.be/rzFX5NWojp0
...and Population Parameters: youtu.be/vikkiwjQqfU
NOTE: For more details on why dividing by 'n' underestimates the population variance and why we square each term, check out the follow up StatQuest: youtu.be/sHRBg6BhKjI
For a complete index of all the StatQuest videos, check out:
statquest.org/video-index
If you'd like to support StatQuest, please consider...
Patreon: patreon.com/statquest
...or...
YouTube Membership: youtube.com/channel/UCtYLUTtgS3k1Fg4y5tAhLbw/join
...buying one of my books, a study guide, a t-shirt or hoodie, or a song from the StatQuest store...
statquest.org/statquest-store
...or just donating to StatQuest!
paypal.me/statquest
Lastly, if you want to keep up with me as I research and create new StatQuests, follow me on twitter:
twitter.com/joshuastarmer
#statquest #statistics
One of the most basic things we do all the time in Data Analysis (i.e. Statistics, Machine Learning or any other sort of number crunching type thing) is calculate the mean, variance and standard deviation. This StatQuest walks you through these tasks and help you avoid a very common pitfall that is all too easy to fall into.
NOTE: This StatQuest assumes are already familiar with...
...Histograms: youtu.be/qBigTkBLU6g
...Statistical Distributions: youtube.com/watch?v=oI3hZJqXJuc
...the Normal Distribution: youtu.be/rzFX5NWojp0
...and Population Parameters: youtu.be/vikkiwjQqfU
NOTE: For more details on why dividing by 'n' underestimates the population variance and why we square each term, check out the follow up StatQuest: youtu.be/sHRBg6BhKjI
For a complete index of all the StatQuest videos, check out:
statquest.org/video-index
If you'd like to support StatQuest, please consider...
Patreon: patreon.com/statquest
...or...
YouTube Membership: youtube.com/channel/UCtYLUTtgS3k1Fg4y5tAhLbw/join
...buying one of my books, a study guide, a t-shirt or hoodie, or a song from the StatQuest store...
statquest.org/statquest-store
...or just donating to StatQuest!
paypal.me/statquest
Lastly, if you want to keep up with me as I research and create new StatQuests, follow me on twitter:
twitter.com/joshuastarmer
#statquest #statistics
