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# Correlaciones Lineales

Student
[00:00:05] if two variables have a “near zero”correlation and you therefore conclude they are unrelated, you are also concluding they are: a)independent of each other b) perfect predictors of each other c) dependent upon each other d)all of the above

Tutor
[00:00:10] Welcome! My name is Anahid, How are you?

Student
[00:00:44] hello im great how are you?

Tutor
[00:01:04] I’m great too! Thanks
[00:01:11] Tell me, what can I do for you today?

Student
[00:01:34] i wrote the problem up there ^
[00:01:39] i dont know what to do

Tutor
[00:02:00] are you familiar with the concept of correlation?

Student
[00:02:09] yes somewhat.

Tutor
[00:02:31] can you tell me what correlation means?

Student
[00:03:35] its a relationship or connection between two things
[00:03:41] if they are related or not..

Tutor
[00:03:52] that’s right!
[00:04:08] the correlation express the relation between two variables
[00:04:22] so if there is an almost zero correlation
[00:04:31] what that means?

Student
[00:04:57] there is no correlation

Tutor
[00:05:05] that’s right
[00:05:07] !
[00:05:25] here is a web site that can help use to see it better

[00:05:48]  http://stattrek.com/statistics/correlation.aspx?Tutorial=Stat

Student
[00:05:59] ok great, thanks!

Tutor
[00:06:14] can you see the graphs?

Student
[00:06:23] yes

Tutor
[00:06:28] look at the one that says zero correlation
[00:06:49] we have two variables, each one represented by an axis
[00:07:35] can we predict one from the other?

Student
[00:07:56] theyre not related?

Tutor
[00:08:07] that’s right
[00:08:36] we can not predict one from the other
[00:08:49] those dots are random
[00:09:03] Does this problem make sense to you now?

Student
[00:09:27] yes
[00:09:38] but i dont get what independent
[00:09:42] or dependent mean

Tutor
[00:10:15] dependent means that the value of one variable depends on the value of the other
[00:10:23] independent is the opposite
[00:10:38] it means that the variables are not related

Student
[00:10:48] oh so a?
[00:10:51] independent

Tutor
[00:10:56] does this sound familiar to you?
[00:11:03] Great job on that one! Nicely done.

Student
[00:11:02] yes

Tutor
[00:11:15] Perfect!  Good work.
[00:11:21] Do you have any questions about anything we went over today?

Student
[00:11:24] thank you!
[00:11:30] no thats it

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