Data Science Interview Walkthrough, Probability Question Set 1

[@harryz7973]

I learned a lot from you. Would you please add more videos on estimating Probability density function using observed data.

[@syedatif3832]

I dont know why you have few subscribers but you are awesome

[@azhardiwan9280]

1st box has 12black and 12red cards, 2nd box has 24black and 24red cards. If you want to draw 4 cards at random from one of the 2 boxes, which box has the higher probability of getting the same color? Explain your answer Pliz answr the question

[@anandkrishnamoorthy8618]

Since there are 501 in the 500 coins. Why can't we say that the probability of flipping 5 heads is: P (5 heads) = (501/1000)^5.

[@shubhamagnihotri4738]

why so much solving as picking the coin doesnot impact on probability of outcome H/T=0.5, since they are independent event therefore getting heads=0.5 probability for one coin and for 5 its 0.5^5

[@luckykukreja95]

Really Helpfull :)

[@stephenmurray9503]

Why is the probability of 5 heads from the non normal coin = 1?

[@priyankajha8338]

non normal coin is 2-headed (both side are heads).

[@the_vaibhavmangroliyaa]

@@priyankajha8338 yes

[@purvagarg671]

Why first question is not done by bayes theorem?

[@macstrelioff]

The first part of the first question assumes you pick the normal coin

[@sawmilljoseph]

Hey Mac, I'm really enjoying this whole series. Do you recommend any book/online resources with additional probability brain teasers like the ones you go over? Quick question about part 2: "What is the probability you pick 5 heads". Shouldn't we be modeling the process where we draw a random coin with replacement and then flip heads 5 times in a row? ie P(H)^5 P(H) = P(H|N)*P(N) + P(H|~N)*P(~N) P(H) = .501 .501^5 = .0315 v.s. your result of .033 I'm confused why you do .5^5 * (499/500) when that doesn't describe the sequential event EDIT: looks like i misread the question

[@macstrelioff]

Hey Brian, Thanks for watching! Might be overkill, but the book we worked through in my stat classes was Statistical Inference by Casella & Berger. Another is a book I haven't worked out of much, but one you might be interested in; Stochastic Processes by Sheldon Ross And yeah, the problem in the video was picking the coin once then flipping that same coin 5 times.

[@RonnieChand-yy4ic]

The logic given by you was not very accurate

[@020hamza2]

For Indians your voice is not easy to understand