Data Science & Statistics Tutorial: The Poisson Distribution

When we measure the occurrences of an event over a certain period of time or distance, we are often left wondering if what we observe is surprising. The Poisson Distribution helps us determine the likelihood of specific discrete outcomes based on a given historical average number of occurrences. For instance, we know that the average firefly lights up 7 times over the course of 20 seconds. With this distribution we can determine the extent to which it will be out of the norm if it lights up only 4 times during that interval. Being able to spot unusual frequencies of recurring events will help us determine whether something is worrisome or not and if we should further investigate the problem.

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[ayo]

Clear, simple and concise. Brilliant explanation. Very useful!!

[Apuscus]

Thank you so much! Such clear, coherently and simple explanation!

[sanjeevb]

5 minutes and i had it all...Thanks 365 Data Science.!!!

[jasonroggy]

your videos are interesting ! i like them ! its one of the best that i see

[yingzpiration]

Is there a reason why you uploaded 2 Poisson Dist video in your playlist? Or is Exponential Dist missing?

[charleskidney]

Good video, cleared up a lot for me. However still lost on those formula's

[Theprime-]

could you make videos on this distributions

Geometric Distribution
Hypergeometric Distribution
Negative Binomial Distribution
Continuous Probability Distributions
Uniform Distribution
Exponential Distribution
Laplace / double-sided exponential
Cauchy Distribution
Gamma Distribution
Rayleigh Distribution
Beta Distribution

[Amitutube]

What's the solution to the firefly problem? Is it .8% probability?

[yavarjn]

We need to know where the equations come from.

[infidos]

Can you please make the Probability Mass function and Probability density function videos.

[АбеНиш]

What if I had example: First day there is 3 students asking question, second day there were 5 students asking question. Do i take lambda to be 4 (as average) ?

[aryaagrawal]

oh my god!!...you really rock!..loved this

[MatLICEABECERRILSANTIAGO]

are you gonna finish that (french accent) poisson?

[jooao_guerra]

Nice video!
By the way, I tried to calculate the probability of a fly lighting 8 times in 20 seconds.
I didn't know exactly how to do it so instead of lambda = 3 (3 lights/10 sec), I used lambda = 6 (6 lights/20 sec), which gives us a probability of 25.6%.
Can anyone help me? Is it correct?

[shritishaw]

aren't ya the same guy, who advertises for Simplilearn!?!? btw the content is very lucrative.

[tylersoblaskey]

Le Poisson, Le Poisson! How I love Le Poisson, how I love little fishes don’t ???

[scottsmith]

OILER

It's pronounced "oiler, " not "you-ler."

That's my only complaint.

[randaya]

The only thing that you didn't nail is pronouncing Euler. It's pronouned as "oiler" not U-ler. But overall, I like the content.

[oedhelsetren]

Euler is pronounced oy-ler not yu-ler.