Standard deviation (simply explained)

Finally I got to understand what the std deviation is! Great video

Thank you so so much, Please continue to post such interesting math lessons.

The word "standard" has many different meanings, Hence, it depends on each . individual's purposes how the phrase '" standard deviation" can be interpreted , while standard can vary accordingly to each individual' s personal interests. It is a malpractice in statistics to use such ambiguous language to express such a simple and straightforward notion of mathemstics,and an expression of ignorance of English language.
The actual meaning represented by the ambiguous word '"standard" is average. It has only one meaning, which is the average deviation of the deviations of all data points away from either the sample mean or population mean value of a set of data
When you say average deviation, even people with no knowledge of statistics can understand straight away what it is about
Ambiguous language can make such simple or straightforward notion confusing or complicated, which prevents yourself from being well understood, and thus makes teaching and learning become unnecessarily difficult for all
All teachers, including teachers of English language, should be sent to a course for reviewing their knowledge of the language

Sponge planetary light
1>10
10>1
1=1
Crypto

Had this button on my Casio fx-31 at school. Never knew what it was. Now I do. I beat one off watching you, sexy lady.

FYI, in english "height" sounds more like "kite" than "hate".

I started wondering how you measured "hate", I had to wait for the diagram to realise you meant "height" lol.

Love your explanation that even a caveman can understand. Awesome!

nice video, but could be improved a lot if you take some time explaining why divide by (n-1) when it comes to samples. Not everyone understand the bias of maximum likely-hood estimator.

wow this was so staright forward

Calculating hate among people will depend if we're talking about America, or Somalia.

Nice

Thank you for sharing the explanation. You may want to look up the pronunciation of "height", though. I was listening only, and when I heard you wanted to measure the "hate" of people, I got really curious as to how you were going to achieve that feat...

Love how simple and straightforward this video is. I'd love if it included why we use the n-1 in a sample case. I realize that would add significantly to the length of the video but it's conceptually pretty cool and a useful thing for more people to think about.

I cant understand why is it different from mean deviation.

Your calculation of the mean is actually the average. You get the mean by sorting all values from low to high and than pick the middle one. The rest of the explanation is good, but I can't use this because the mean is calculated incorrectly...

Great video and very well explained. Your narration was cogent and really well done. And.... you're beautiful. 😊

Nice explanation.

Thank you for the lesson.

I keep hearing hate instead of height

Thank you! 1) You explained, which method (N vs N-1) I have to use in which situation. But I didn't understand, why. 2) when "standard deviation" means the "mean value of all deviations": why I have to square the differences?

Nice and easily explained, but I have used two methods for calculating the standard deviation (the above being one of them), and both come to 11.50 and not 12.06.

Why did you start off calculating the average, not the mean in your video? Average is sum(h)/n but the mean is simply the h value at n/2.

LOL, I'm sitting here wondering what kind of person would make this video where the question is "measure the hate of a small group of people". Much relieved when HEIGHT measurements finally started appearing on screen. Height. Rhymes with Zeit.😂😂

Das Niveau, auf dem sich dieses Video bewegt, ist einigermaßen niederschmetternd. Ich will doch nicht nur wissen, WIE ich etwas berechne, sondern v.a. WARUM ich etwa durch (n-1) teile statt nur durch n.

okay.. why am i now finiding this page??? my lord... great for psyc undergrads

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My ears…

What is difference between Standart deviation and standart error?

you should have explained how the formula has come together

I'm sure there's a good explanation, but why not just find the mean of the deviations? (18 + 8 + 15 + 8 + 9 + 6)/6 . What's with all the squaring and roots? What does that buy you?

Good video…unfortunate pronunciation of height for a German, what with the German people’s use of stats in a particular way early to mid 20 century.

Standard deviation is not 'the average distance from the mean'. By construction, the average distance from the mean is always equal to zero. Standard deviation is actually the square root of the average squared distance from the mean, which is algebraically different.

Couldnt we use absolute values to aboid zeros in std deviation fir the arithmetic mean ? 😢

Tge explanation is top notch. You dont have to ask us to subscibe , we do it for u without that ma 😊

Good job, thanks.

Too bad that you used the wrong English word in your example: "Size", instead of "Height", however your point was understood.
"Size" refers to clothing sizes: Small, Medium, Large, etc.

Such a simple explanation. Love it when people who knows stuff explain things.

Sorry, but this video doesn’t really explain anything beyond how to do the calculation which we probably already knew. It doesn’t explain why use the quadratic mean instead of the Arithmetic mean. It doesn’t explain why there is an N minus one instead of an N. It doesn’t give any insight into what the variance is or what it’s used for.

I don't understand why anyone would height this video. That was very clearly explained. Thanks!

If I add up the absolute deviations and divide them by 6 I do not get zero but 10.67.

Super!! Super!!

Total deviation is 64 cm. Average simple deviation is 64 cm divided by 6 persons. On average then, isn't the average simple (not standard) deviation 10.67 cm?

Thanks, the best explanation

Hi miss, I am glad that I found you . Thank you so much for teaching us .This really helped us

This video contains so much hate