When he asks "raise your hand if you understand" I am home alone raising my hand hoping Mr. LEONARD SEES ME. What an amazing professor!!

@AdityaSingh-sb4ck

2 жыл бұрын

True

@nkeirukaugochinyelu889

2 жыл бұрын

Hahahahaha...same here. Really amazing

@rajeshsankaran8723

2 жыл бұрын

@@AdityaSingh-sb4ck 2.Empower

I have a statistics professor that almost did not go over vocab or explanations of equations at all while working full-time, taking 13 credits and paying for my schooling out of pocket. So it means a lot to me when I don't accomplish my goals in a class and I don't have much free time to do "self-teaching". THIS VIDEO HELPED ME OUT SO MUCH AND I AM VERY GRATEFUL FOR THIS GUY PUTTING THIS UP. I would donate money to this guy if I had a way to.

@nam3go3sh3r3

5 жыл бұрын

You can he has a patreon

@kufreibanga7980

4 жыл бұрын

Here it is www.patreon.com/ProfessorLeonard

@hemiacetal1331

3 жыл бұрын

@Katelynn Lehenbauer Shut the fuck up

16:34 Formula for Standard Deviation (SD) using mean 23:28 Second formula for SD (without finding mean) 54:34 SD sample vs. population 1:04:01 Calculator

@mattlee3388

8 жыл бұрын

+pearlylissanu thanks

@Megablues1000

7 жыл бұрын

thank you soooo much

@anm9842

6 жыл бұрын

5

@jasonphillip5686

2 жыл бұрын

Hey can this help with some of the gambling games that currently exist

Took stats 4 years ago but coming back for the review. Professor Leonard's videos got me through calc 2. He's a legend in the making

58:10 Variance 1:50:44 Coefficient of Varience (CV) 1:54:27 Formula for CV

OMG. This is actually a Godsend! He is a great teacher! Now I'm thinking even more that there's a red cape under that shirt!! I just might pass Statistics yet!

I wish I had Professor Leonard at my university. His lectures are clairvoyant.

Thank You for sharing! I'm taking this class on-line and was about to give up until I found these videos. So much better than figuring out from reading in a book. Thank you for explaining each sections with examples!

@felixlizwe1945

5 жыл бұрын

Same here in Lusaka Zambia Jessy... self study and these lectures surely come in handy!!!

Ways to measure the variance (dispersion): The measure of dispersion tells us a lot about our data. For example, if the variance (spread) of values is large, than the mean is not a good reflection of our data points. However, if the variance of values is narrow, than the mean is a good reflection of our data set. Remember: the point of the central tendency (mean, median, and mode) is to explain our data set with a single value. If the single value is not a good reflection of the data set, than the value is unimportant. 1. Range (Max Value - Lowest Value = Range): The distance between the largest and lowest data value. For example, the data set (1, 2, 3, 4, 5), The max value is (5) and the lowest value is (1). Therefore, it will be 5 - 1 = 4. The range is 4. 2. Standard Deviation: The SD tells us how spread out the data is. It will help us determine if a result is statistically significant or a part of an expected variation. We only use SD when we are working with approximately normal (bell curve) data sets. When we say the standard deviation is low - we are saying the data is tightly clustered around the mean (sharp cone shape). When we say the standard deviation is high - we are saying the data is dispersed over a wider range of values (Imagine a hill). When you work with the SD you will encounter the 68 - 95 - 99.7 rule. It is saying, 68% of the data will be one SD from the mean. 95% of the data will be two standard deviations from the mean. 99.7% of the data will be three standard deviations from the mean.

It's so rude how they all start packing up while he's still talking. This guy has a lot of patience.

@bawol-official

3 жыл бұрын

It’s the mental equivalent of slamming the door on someone when they’re in the middle of talking. The Brain is no longer thinking analytically so it goes in one ear out the other as completely arbitrary vocabulary.

@YeshuaIsTheTruth

Ай бұрын

It's rude how they might only have 5-10 minutes to use the bathroom and run 1/4 mile across campus before they're penalized for tardiness.

My Statistics book just threw out that standard deviation formula from nowhere and refused to explain the "n-1" part until much later, and then Professor Leonard derives it in like 5 minutes and justifies "n-1" right away. Amazing.

You are officially my new professor for this statistics class!!! You are amazing!

after reading text books and taking graduate level stat course in MBA , I still found this extraordinarily lucid and valuable. Thank you

Thanks for sharing these videos! I found these much easier to understand than some of the stuff out there.

Statistics have been one of my set backs, will definitely go through this over and over. Very grateful sir.

This helped out a lot. One cannot thank teachers like him enough.

Great Professor! I like the way he teaches step by step.

Thank you very much. Couldn't master this class without your lectures.

It's crazy how my professor can explain it and it looks like a foreign language and then the way professor leonard explains it and it's crystal clear. Thanks for this Professor Leonard!

I cannot thank you enough "Professor Leonard" I am in an express program and currently taking Stat's, I was lost. Your lectures have been a lifesaver and covered the material in a way that matched my sylabuss and helped me grasp the concepts needed to at very least understand what I am doing, and hopefully pass the class, closing the door to math classes as I forge on to my degree.

i dont know what i wouldve done without your videos.Thank you. My prof teaching methods dont work for me. i am an A student but ive never felt so lost.

@dianar.2990

7 жыл бұрын

Daphkar Alexis I know the feeling. I'm so lost in my class as well.

@Botanicalstudio22

3 жыл бұрын

Omg I'm the same way, my professor SUCKS.. no real teaching just telling us what to read and then just apply it to the homework.. no examples or anything like this professor does. Wish I would've found him before my last week of statistics 1 and having a B- so far, been getting all A's until dreadful statistics 😓.

Dear Professor Leonard, I really like all your videos and the way how easy you can explain the topic to the audience. With your explanation, I finally passed this course after two failures. Before, I was thinking that statistics was not for me and that I was not good at it. Now, I really like it, and I enjoyed the course for the first time. Truly appreciate your work. Thank you very much!!!

We need more professors like you! You are so wonderful and helpful. Thank you for taking the time to upload these videos. If it wasn't for these videos I wouldn't have a solid understanding of statistics. Your the best!!!!!

I never took stats before and so far I understood every topic. I can say that my deviation of understanding is minuscule. 😀 Thank you Professor Leonard.

Wow I was so lost, I wish I had you as a tutor for my home schooling 😍

you are the hero for those who feel like dumb ass because of dumb profs that doesnt know how to explain a piece of info... thank you a lot for the hard working making sure everyone knows what you are talking about

Great professor, very easy to comprehend!

@dw5728

9 жыл бұрын

arnold wayne Agreed. He actually keeps my interest and attention the whole time. It kind of helps that he's easy on the eyes too...

I was afraid of Stats. But after your videos, i am applying this knowledge in real time data analysis. Thank you very much.

Professor Leonard really makes everything extremely clear~~ I have also watched the open classes on statistics from UCLA, which just made me more confused. Thank you very much!

Good examples. Makes it understandable. I like that he spends so much time on the concepsts and terminology.

ABSOLUTELY AN ANGEL IN HUMAN FORM. THIS IS LIFE CHANGING LEONARD. THANK YOU!

Thank you so much! When my teacher taught this in class this past week I was so lost, but now I get it. Your way is ALOT easier than hers was as well. And a added bonus was you going over the Empirical Rule. I wasn’t getting that either.

He is showing the actual meaning of teaching. 😍

this dude is literally saving my ass for this midterm next week.

These videos are saving my life for my final tomorrow.

Hi Professor Leonard, First of all, I want to say thank you!! I am taking a hybrid stats class, which was a huge mistake, but, my schedule would not allow anything else. I learn by watching the problem done a couple of times in order to get the hang of it. Especially in mathematics. So thank you for this!

33:00-33:12 is a great example of how you pull off the joke "I wrote it wrong on purpose just to see if you were paying attention" correctly.

Thank You So much Professor Leonard. Currently, I am loving your way of teaching the statistics.

Thank you so much for posting these videos! They r so helpful. You make math easier to understand.

It is 2022 and all your videos help me a lot!!!!!!!!!!!! I am so lucky to find your channel.

Why can't EVERY PROFESSOR teach like this????

an inteligent american mathematician from califonia usa prof leonad u r a geniours. u r a real natural scientist i read in history.the few dislikes u see above prof are that of abunch of proffs who r strugling with slideshow lessons n whos students kip rejecting.

Now I have to calculate professor leonard's back muscle deviation in relation to his bicep distribution

I am so happy to have found your videos. I spent entirely to long trying to loathes and you taught this to me in 51 minutes and 45 seconds. I spent countless hours trying to figure this out. My instructor isn't really teaching us, just power points. Its very ineffective for me, I need to be shown how to do stuff and explained why things are done. You are excellent. You are not at all boring. Thank you!!! All "A" student here quickly going to lower B's and being frustrated...I will be getting my grade back up with your help!

Thank God I discovered this channel. Total lifesaver!!

my professor just goes through powerpoints rather than drawing actual graphs and giving good examples ugh

For anyone interested, at 56:12 he says there isn't a corollary equation for the population standard deviation equation he wrote on the board, but there is. You basically derive it the same way he derived the alternate sample standard deviation. Sal's video helps explain that kzread.info/dash/bejne/pYaKqcWSd827m5s.html

This was so helpful. I have a test coming up and my current professor is not very good at teaching. He's young with a PhD but has very little experience with teaching.

you are making my life easy from 6 years and counting

Professor Leonard you and your videos going to be my best friend for this semester.

Thank you so much Professor Leonard !!!! Your the only reason why i understand this now

You are an excellent teacher. Thank you for sharing!

i really want to hack my professor computer and just show your videos in class

Thanks for the Lecturer and my understanding on statistics has greatly improved .

31:24 I like how squaring x-*x* (bolded x actually has a bar above it) gives you (x-x^2)^2. That makes total sense.

Your lecture is amazing ,it is really good to understand more about stats

God bless you Professor. all the lectures have been beyond useful

I can't concentrate on the lesson, because I'm lookin' at the GUN SHOW...mister professor, I think i need private lessons. :-D

Professor Leonard is the best. These videos are very helpful

I really enjoy these vids I haven't even opened my class book. Im just following this

These videos have really helped me !

I'm from Nigeria sir, I like your styles of teaching.

GOOD JOB,thank you for these videos

very helpful, thank you heaps and hope to see more video from you soon :)

Great helpful videos, Thank you so much

Very clear and organized. I am studying this lesson and thanks for this professor l understand.

great professor. many thanks for your video.

THANK YOU so much I finally understand standard deviation!!!

This guy is AWESOME!!!

the dataset that is within 2 standard deviations of the mean is likely and is usual, whereas the ones falling outside of these standard deviations is unusual data.

came for help with stats, stayed to stare at the hot teacher. 😻

@onmas909

7 жыл бұрын

his mom must be so proud of him. he has muscles and can teach math! :)

@CrazycruxGaming

6 жыл бұрын

it's hilarious how it sounds like his class is majority female lmao

@Ironandivory

6 жыл бұрын

Yup, that's why I clicked. Total side track from finding regression calculations.

@mas_mos424

6 жыл бұрын

Sapphire Love yes!

@fatimanafees5028

3 жыл бұрын

Ugh sameeee ❤️🥰

Watching in Quetta Pakistan, Great work Professor, U have been a great help, feels like IM actually in the class.

@ahmadjan7133

3 жыл бұрын

Chalo acha a koi quetta say b lecture ly Raha a

you are a gift from god thank you for sharing

daddy leonard always coming in clutch

dad jokes for days. thanks professor very helpful

from Vietnam, i send my love to u professor

Excellent teaching.

Rock on, Professor Leonard!!

thank u so much. your a life saver..

Dude i love your teaching you have amazing art of teaching

@beverleeshiadavis1

3 жыл бұрын

could someone tell me how he got 1.73 for a square root of 3?

@AceLordy

2 жыл бұрын

@@beverleeshiadavis1 You can use a calculator but if you want to do that manually then search for Newton Raphson method of approximation.

Thank you! so much!!!! your videos are saving my grade :)

thank you soooooo much ....شكرا

If we do the actual reality math it’s a different value. The actual differences between x and the mean are5,3,8 which total 16. Then divide by 3 to get the average of the distances. As you see doesn’t come out to 7. Reality doesn’t equate to formula.

Why do we need to have variance and standard deviation? What I mean to say is, what are some practical instances where using the variance is better than using the standard deviation (or the other way around)?

I have question If allowed me: on 20:32 why we didn’t us the absolute value to standard deviations instead of squaring?

you could have the best Stat textbook in the world and it still wouldn't be able to half as good a job as Prof Leonard you my nigga prof Leonard regards from New York

Hello, What an amazing explanation correlating to some practical examples. I am looking for some more insight on the relation between the Standard deviation and the data values. Regards

Great video prof, but I think the explanation for why we use the squared the difference between the data value and the mean in calculating the standard deviation is a bit off. Negative data point and a positive mean doesn't cancel each other out. For example, consider a data point of -6 and a mean of 6, then (x - x_bar) would be (-6 - 6) which is -12. So it doesn't justify why we can't use absolute value instead of squaring it to get a "positive" distance. Actually, the calculation using an absolute value even has its own name, called the "mean deviation". It is just that the squared version has nicer mathematical properties and therefore more commonly used. There's an interesting discussion on the mathematic stackexchange for this, just try to google it!

Thanks extremely helpful

I'm waaaaay over learning this but I'm watching cause he's hot

@kristydrr20

8 жыл бұрын

That what I nicknames him, Clark Kent!

You're an amazing teacher! :D

Thank you for the interesting video!

i just wanna see u talk all day damn

i'm taking an asynchronous stat class in quarantine so this genuine teaching has helped so much

Excellent.

if we have standard deviation, why do we need variance? or vice versa?

Good lecturing from professor

amazing teacher

Professor Leonard help me to get distinction in Statistics subject in my first year biomedical science. Now, I am almost done with my second year. Can't believe I made it through.

well done!!!!Thank you.