Descriptive Statistics: FULL Tutorial - Mean, Median, Mode, Variance & SD (With Examples)

Learn the basics of descriptive statistics in 15 minutes! If you're new to quantitative data analysis, you don't want to miss this. In this lesson, we cover the basics of descriptive statistics, including measures of central tendency such as the mean (average), median and mode - as well as measures of dispersion, such as variance and standard deviation. We also explore skewness to help you understand how data can be shaped. We'll look at tons of examples along the way, so that you can fully understand descriptive stats and approach your analysis with confidence!

OVERVIEW: Descriptive Statistics 101

00:00 Intro
00:20 What are descriptive statistics?
00:57 Examples of descriptive statistics
01:48 Descriptive statistics vs inferential statistics
02:25 Samples and populations
02:30 Why descriptive statistics are so important
03:40 The Big 7 descriptive
04:04 Measures of central tendency
04:20 Mean, median and mode
04:50 Examples of mean, median and mode
06:10 Frequency distributions and bell curves
06:35 Skewness statistics
06:50 Leans and shapes of distributions
08:12 Measures of dispersion
07:30 Understanding dispersion
07:49 How dispersion impacts your interpretation
08:16 Range
08:38 Variance
09:10 Standard deviation
09:40 Examples of range, variance and standard deviation
11:45 Recap of descriptive stats
12:30 Free resources

KEY RESOURCES:

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[khuephamminh]

Man, you explain everything in 13 minutes more understandable than my professor for a 2-hour lecture.

[vanessak]

I love the fact that I found your videos when I needed information to be explained to me in a manner I could relate and translate into my own words

[meowmeow]

This is so helpful especially when I'm preparing for grad school!

[angel_feathers]

Wonderful explanation in a simplest way. Thank you

[ArtDelverNisperos]

Not even half through, I already received tremendous amount of information

[bishoptravormubaya]

Excellent video. Well explained. Thank You .

[lalena]

Thank you for the video!! It‘s explained fairly well and I am using it to study for my finals right now. But I have some constructive criticism, which I hope you do not perceive as something mean, but am very sensitive about that, because I had some classes on „how to do presentations“ at work and to be honest, your hand movements were a bit distracting after some time. I read the subtitles along with watching the video and could not focus after a few minutes anymore on the text. So, I totally get speaking with your whole body (I do the same), but perhaps, trying to reduce it a bit, would be better for overall presentation skills. :) Thank you very much though!

[TheAuditor]

Its a wonderful video Sir. Plz keep it up. just one suggestion, your hand gestures went distracting after the 3rd minute in the video. your hands were way too jerky, fidgety and restless. Plz keep them bit relax and less moving in the next vid. Good job. Appreciate that. Its easily digestable for a layman like me. God bless.

[thechadstride]

Thank you gradcoach for your website and video. I found them to be very helpful in doing my research.

[isaackingsleyarthur-gaisie]

I like this video because is more understanding and the movement of the mans hands kills me.

[SarayCuevasRenteria]

Can you guys make a video on how to appropriately label different measures of variability based on the different types of variables?

[CushingsSx]

Which is the most valid measure of central tendency in skewed data?

[jaywebster]

2 modes in your sample data set 5 and 6 both appear 3 times. (5.30)

[yangankutu]

Nd can calculate the mean and standard deviation

[SaddamRIAR]

I have a questions for Median why 8 is the central number, why not 7? the central number technically if we divide 15/2 we get 7.5 but you took 8, why not 7 then but 8 in case we don't have 7.5?

[yangankutu]

Hello, hope you are well, I would like to ask can you also do descriptive statistics when you compàring two years variables for example 2017 and 2018 music festival and the variables can be income, total of attendance, national attendance, international attendance, job created but this years can different values please i hope you understand what I'm asking to do 🙏🙏

[RosaVaneca]

the mode here is not 5, is 5 and 6. it's a bimodal serie bcz they have the same frequency which is 3

[SaddamRIAR]

So called great minds Aka professors take all the time in the world to explain this which you did in 13 mins.

[Agoraphobia]

Did I miss the 7th of the Big 7?! Mean, Median Mode…Range, Variance, SD…what was 7?

[mozzarella-wp]

Whats the answer for mode? 5 and 6 both appeared three times.