How to calculate Confidence Intervals and Margin of Error 

I'm 95% more confident that I will get a better grade on my final tomorrow. Thank you so much, man!

Thank you for you compliments. I use a variety of different software including photoshop, illustrator, HTML5, Final Cut, GarageBand and a few other products. Each video takes me a long time to create. My rule of thumb is each minute of video takes about 12 hours to create, so a 7 minute video takes me about 84 hours of development time. Besides the technology I use, I have done a tremendous amount of research on how students learn via animations and the impact of color and narration.

I'm a visual learner, and this helped me more than you can ever know! You spoke clearly and the animations were superb. Thank you so much. The world needs teachers like yourself :)

This is a great tutorial. You talked slow and easy with really good animations. Keep up the good work, your doing well :)

I've watched several stat videos, the way you do this video makes it so much easier to follow along and connect the dots. I'm not near as confused as I was before watching. Now on to see what other videos you have that might help me pass this class. Thank you!!

These videos are life saving! My stats teacher does not give us examples like this at all. You make stats tangible and workable.....thank you so much. I've shared your channel with all my whole class too!

Sir! This is hands down the best video tutorial I have seen my entire life. You have no idea.

Excellent video. I really liked the simplicity of it, you made it so easy to understand. I like how you took your time in explaining each aspect and the graphics included..way cool!

Wow this has got to be the best description ive ever looked at. Clean, Understandable, and overall fun considering math was never a strong suit of mine. Thank you for this excellent outline.

I'm in the joint Masters of Public Health and Masters of Public Policy program. Our public policy program is #1 in policy analysis that's because we go through a ton of stats and econometrics. I wish we had someone like you on faculty. I think the folks who aren't math wonks would love you. I'm definitely going to have the incoming class this year subscribe to your page for help.You are hands down the best out there.

This is the first video I've understood fully so far. thank you

Thank you so so so so much from South Africa. I was really struggeling with STATS until I found your tutorials. No it all makes sense. All my fellow stats students agree that you are the Superman of stats lecturers !!!!!!!! Again, thank you so much.

This is the 4th or 5th video I have gone to trying to understand Confidence Intervals, you my friend have finally helped me understand. Thank you so much for being so clear and taking it step by step. I feel like the other videos assumed I knew given things, it really helped that you took it step by step regardless of prior knowledge.

One word respect !! its just so perfect, it just melts into my brain. Your channel name is so appropriate. Love from Canada !!

Amazing!!! Finally someone who can explain this without getting unnecessarily complicated.

Thanks for the compliment. I don't have anything on Binomial approximation yet, but it is something I do need to create. Good luck in your studies too.

So glad I found you! Your explanation was clear and to the point and you make Statistic so much easier to understand. THANK YOU :)

So helpful! Really helps you get the basics down. I like that the video is short because it is easier to learn in small steps.

so simply explained. you made it sound easy compared to others.. thank you so much

YOU CANNOT BE ANY CLEARER !!! WOW!! AMAZING!! If I had ten thumbs, I would have raise them all up.

Thank you so much for such a well though our compliment - much appreciated! Make sure you like MyBookSucks on Facebook (see link in video description). It will help me spread the word about the videos.

In all videos that I have watched this video is easier to understand than others! Thank you

I have been trying to make sense of this for the past week. You have a gift for teaching! Thank you so much!!!

That is great to hear! Thanks for sharing my channel to. Make sure you like MyBookSucks on FB (see link in the video description) and subscribe to this channel too because I am always posting new videos.

Helped me finish my Stats homework. I am taking this class online and will definitley be looking into more of your stuff to help me out. Thank you!

Interesting you mention the microphone. My daughter is a musician and helped me set up my microphone (with a pop filter). It was really not that much money and you are right it does sound much better.

You are going to be my hero for the rest of this semester

I've got a Stats test tomorrow and these tutorials are helping me so much! Keep it up!

Wow! All this time.... I thought it was so much complicated than I really thought. Thank you so much!!! I understand it now.

Great to hear and appreciate the feedback back. Good luck on your Six Sigma exams (if you plan to take them).

I find I do not even need to pause these short little lectures, and I understand clearly! You can teach me more in 6 mins, than any of my professors can in a 2 hour lecture. It would help if ALL of them had a slightly better American accent. Thank You! ~ Sarah (Sophomore @ UWGB)

Great to hear the vids are better than your book and they are costing you a lot less to :). As one student told me that "MyBookSucks and it is expensive too/"

Good luck in your data analysis class! Happy to hear the videos are helping too. Make sure you like MyBookSucks on FaceBook (see link in video description). This will help other students find the educational videos.

finally someone who make this stuff easy to understand!! thank you SQUARED!!!

Thank you! I really appreciate your method of delivery , step by step, and easy to follow.

I am taking Statistics and Introduction to Six Sigma and Process Improvement which is difficult. You've explain this to me perfectly.Thank you

Wow, I honestly cannot thank you enough for your videos! I was considering withdrawing from my Statistics class before watching these! You've made it so simple to understand. Thank you!

Thank you for your simplified explanation! I tried and tried to understand this from my textbook, and although the author has tried to make it interesting, it still felt so overwhelming. I'm taking my Stats class ONLINE, and although my teacher is good about trying to communicate, it's not the same as a teacher in the classroom. I actually understand this now, and I understand the difference between using the formula with the mean and using the one with the probability percentage. I have to pass this class to get into my major program, so thanks for making it easier!

Brilliantly explained! You have a real gift for teaching!

This video is so helpful, love how you explain EVERY single piece. Thanks so much man!

It depends on what type of problem you are trying to solve. You would use proportions (the equation on the right) when you have percents. You use the equation on the left when you have points (or numbers) including a mean and standard deviation.

You are the greatest! Sonny back from UC Berkeley again and I'm reviewing all of the statistics I covered throughout the school year so I don't forget it. You have a knack for explaining things. You saved me in grad school this year, seriously. You wouldn't happen to be any good at constructing Logit and Probit models would you? hahaha. And maybe you can explain to me a Oaxaca binder Decomposition. j/k. Thanks for everything though!

That is is a good idea because it is hard to organize videos in RU-vid. I am building a website that will be organized much like a text book, so students can easily find the topic they are looking for. I will do that for each of my channels (statistics, economics, calculus, and algebra). In the meantime, I would encourage to like "MyBookSucks" on FaceBook. The fan page is light heartened including some college humor, my freshman id, etc.. Thanks again for suggestion.

You have helped me ace my statistics class. Thank you! You do such a great job at simplifying this subject so it makes sense!

How simple you made this concept. Thank you very much.

Amazingly, simply put. I think education would be more interesting if it was taught this way. When you see it in the book, it can be quite daunting. Thank you very much.

You just saved me 2hrs of trying to figure this out on my own! Thank you!

OUTSTANDING PRESENTATION! Dude I am so thankful that I saw this. You are AWESOME!!!!!!!

I loved this explanations, one of the best I have heard! instant subscribe. Thank you sir!

. You are very welcome from Kansas City -- right in the middle of the USA (no beach for a lot of miles!).I have never been to Jamaica, but it is a place I would like to go someday -- looks like a nice place

these vids are awesome, so much better then reading from a textbook

Thank you so much for your comments. I am trying to get the word, to help even more suffering students. I just started a facebook fan page "MyBookSucks" as well.

This is so much clearer than what my teacher gave me! Thanks for your help!

This tutorial was easy to understand and it helped me to understand how to perform the calculations. Thanks.

Thank you for your tutorials. I also really appreciated that you are using real audio equipment and not some cheap $5 mic! lol The audio sounds really nice when it's coming out of a pair of KRK's Rokit6's (with M-Audio C400 interface) and it actually make learning more enjoyable when I don't have to setup a compressor and gate because of the line noise caused by the owner of a RU-vid channel using cheap equipment!! lol

Thank you Deborah for the feedback. It is always good to hear from students. Also, make sure you like MyBookSucks on Facebook (see link in Video description) this will help other students find the educational videos.

Thank you! For the very first time, I totally get the difference between margin of error and confidence interval. Great tutorial!!

That would be good if you shared the link. Also I am open to ideas and suggestions for new videos that students need/want. Good luck in your Masters program as well.

Awesome way to simplify. If you are needing help in this area, (area is a p value not a z score lol) It is a very good way to help you understand what you are doing mathematically to arrive at your conclusion.

you are a absolute champion, i was pulling my hair out trying to answer these questions, thank you!!

Wow! Thank you for such wonderful feedback. I like that Superman of Statistics. All I need now is a big S on my shirt and a cape. That would be fun to wear in my classes. Make sure you like MyBookSucks on FaceBook (see link in video description). This will help others find the educational videos.

even until today your teaching is very helpful😁

Thank you so much for such kind words.

Thank you, thank you, THANK YOU. You explain it way clearer than my professor.

I agree with Jennifer. This is excellent and I really am grateful for your use of color to help your explanations to come to life. I'm not a mathematical genius by any means but, thanks to this, I don't feel like a mathematical imbecile. Before this video, whenever I thought of the Bell Curve, I tend to hear Eric Clapton sing Bell Bottom Blues. I'm also 95% confident this video will help me pass my Quantitative Reason Coursework. Thanks StatisticsFun. I appreciate your help. :)

Well thank you! Your comment is much appreciated.

Wow! Thanks and it is great to hear my videos are lovable. If you have not done so yet make sure you like MyBookSucks on FaceBook (see link in video description). This will help spread the love!

I love questions! First you would take the average and standard deviation of the series of numbers. The confidence coefficient at 95% is 1.96. Once you have these three items you can follow the steps in the video. Make sense?

You are my hero... just sayin'. You have such a calm, steady, well-paced voice. I have an anxiety with any form of math. Literally I should be medicated. I can listen to an instructor speed his/her way through a lecture, jot down as many helpful notes as I can, and think I know my stuff. Get home and yeah...I have no clue what any of it means. Almost as if I was possessed by an entity and it made me write all kinds of Gothic symbols that strangely remind me of hell.

thanks a lot sir.....fantastic videos from you....you are really doing a great job for millions of students out there like me...... I have a doubt though in your video....The sigma which you have used in your equation, is population standard deviation or sample standard deviation?......If it is population standard deviation , then how can we ever know population standard deviation without knowing the population mean?

Yes I have a video on t statistics too (a whole playlist actually). It is hard to organize and sometimes even harder to find anything on RU-vid. I added a link to the playlist in this videos description. Like MyBookSucks on FB too.

Thank you for taking your time, and even making this video. I appreciate it!

Good question. These are for samples. "I am 95% confident my population mean is within the confidence interval I calculated." I should have mentioned that explicitly. Make sure you like MyBookSucks on FaceBook (see link in video description). This will help me spread the word about the educational videos.

Wow! Thanks! Good luck in your classes too.

you saved my life

Why aren't real life teachers like that..? thanks a lot.

Excellent explanation! Thank you so much for doing this video!

awesome. thank you very much. make some more, your way of teaching is enlightening.

After 15 videos 😩. Next time I’ll come here first. Thanks

Thank you soooo much! Taking Data Analysis now, every little bit helps!

Wow. Instantly subscribed after your explanation.

You made it so easy to understand 😮😢. Thank you

You explained this very well coming from someone who struggles with math badly❤️

Thank you! I will definitely put those topics on the list for future videos (especially the probit models) because I am always looking for ideas. Btw, what are you studying at Berkeley?

Very nicely done Sir !! Much appreciated 🙏

Thank you for the video. Me does Msc. Epidemiology and they have really helped in the Biostats

Great video once again !! However, I am having a lot of problems with a question that I was given. They gave you the sample size, the mean and the standard deviation and the question asked was : Construct a 95% confidence interval that contains the true population parameter? I am veryyyy confused with the "population parameter part. Anyway, your economics and statistics videos are always fantastical !!!!!

Thank you Thank you for this video. Very clear and extremely helpful

Really loved this video. Very thoughtfully made and executed! Finally able to make sense of some of this stuff haha. Thank you thank you thank you!!!

Thank you sooo much I was having so much trouble!!!!

Animations are superb👍🏼

Extremely organized and well thought out. 🙌🏼🙌🏼🙏🏻

Nice video. Very informative. One thing I want to know is what kind of software did you use? I would like to use it to explain different topics to people. Thx!

Really really good way to explain it!!!

Thank you. Respect from Jamaica.

hi Statisticsfun, love you videos and have a request, can u put them in a sequence and number them. or turn them into an itunesU format? that way we students can have our doubts cleared in a sequence.

You are welcome and good luck in your biostats too.

Amazing lecture easy and fast!

You are very welcome! I always appreciate hearing how my videos are helping students. Good luck in your statistics class too. Make sure you like MyBookSucks on FaceBook (see link in video description). This will help others find the educational videos.

This was extremely helpful, thanks so much!