# Probability distribution doubts

10 messages
Open this post in threaded view
|

## Probability distribution doubts

 1) If X and Y have joint probability distribution f(x,y) = 1/4 for x = -3 and y = -5, x = -1 and y = -1, x = 1 an y = 1, and x = 3 and y = 5, find cov(X,Y). i got 8. please confirm. 2) if joint pdf of X and Y is given by f(x,y) = 1/3(x+y) for 0
Open this post in threaded view
|

## Re: Probability distribution doubts

 D fst one is cMing out to b 8 as x nd y hving xpctation =0 BUT in d scnd case is d f(x,y)=1/(3(x+y)) or just (x+y)/3???
Open this post in threaded view
|

## Re: Probability distribution doubts

 its (x+y)/3 “Operator! Give me the number for 911!”
Open this post in threaded view
|

## Re: Probability distribution doubts

 In reply to this post by Homer Simpson Well..d 2. Nd one is cmin like 4. Something..
Open this post in threaded view
|

## Re: Probability distribution doubts

 Whats 2 again? i didnt understand what you wrote in the reply? “Operator! Give me the number for 911!”
Open this post in threaded view
|

## Re: Probability distribution doubts

 Well...its approximately 4... hve u got d same typ of answer?? On 5 Jun 2014 20:15, "tsuki [via Discussion forum]" <[hidden email]> wrote: Whats 2 again? i didnt understand what you wrote in the reply? If you reply to this email, your message will be added to the discussion below: http://discussion-forum.2150183.n2.nabble.com/Probability-distribution-doubts-tp7591576p7591584.html To unsubscribe from Probability distribution doubts, click here. NAML
Open this post in threaded view
|

## Re: Probability distribution doubts

 answer is 805/162 - not getting this. can you show the steps please?? “Operator! Give me the number for 911!”
Open this post in threaded view
|

## Re: Probability distribution doubts

 I m hvin some 703/162... may b some calculation mistake... I m just findin out d variances of x nd y.. and dn calculating it... upps..I forgot to minus d cov part... just do it.. I think we gonna hve d answer after subtracting it.. On 5 Jun 2014 20:19, "tsuki [via Discussion forum]" <[hidden email]> wrote: answer is 805/162 - not getting this. can you show the steps please?? If you reply to this email, your message will be added to the discussion below: http://discussion-forum.2150183.n2.nabble.com/Probability-distribution-doubts-tp7591576p7591586.html To unsubscribe from Probability distribution doubts, click here. NAML