The normal probability plot is formed by plotting the sorted data vs. an approximation to the means or medians of the corresponding order statistics. Done using Excel.
It's 1:09am, In South Africa, Cape Town. It's a day before my birthday, I'm doing a Stats assignment for my postgraduate diploma and you are the only person who perfectly explained this to me! Thank you!
Brilliant - you have made the process of establishing Q-Q plots rather simple...I was scratching my head and only 24hrs until my assessment was due. Fingers Crossed I am on the right track. Thanks Again
I am new to this topic can you please explain me why you calculate formula {i-0.5)/n ? Can you please help me ... and one more question what is difference between {i-0.5)/n and standardized x value ..?
what do you do, open to anyone, if you have many mutiple/repeated data values in the original data set using this method, the qq plot formed looked odd and didn't appear to follow a straight line
Helpful. But standard Normal has SD=1, while the sample may not. Shouldn't you calculate the standard deviation of the sample before comparing to a standard normal? this topic is sending me mad...
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It's 1:09am, In South Africa, Cape Town. It's a day before my birthday, I'm doing a Stats assignment for my postgraduate diploma and you are the only person who perfectly explained this to me! Thank you!
I'm learning for my postgraduate stats exam :(
Brilliant - you have made the process of establishing Q-Q plots rather simple...I was scratching my head and only 24hrs until my assessment was due. Fingers Crossed I am on the right track. Thanks Again
I am new to this topic can you please explain me why you calculate formula {i-0.5)/n ? Can you please help me ... and one more question what is difference between {i-0.5)/n and standardized x value ..?
Thank you for posting this Jalayer, much faster in R, but useful to know how to do this in excel. Many thanks!
Hello. To everyone I recommend sorting values first! The video confused me untill 8:20, when he finally sorted the data...
how did you get the value of x?😅
perfect score for making it understandable. Thanks!!
what do you do, open to anyone, if you have many mutiple/repeated data values in the original data set using this method, the qq plot formed looked odd and didn't appear to follow a straight line
Hello Josh,
My name is Hillary Clinton and my husband is a sex offender.
Kind Regards,
Hilldog1337
Helpful. But standard Normal has SD=1, while the sample may not. Shouldn't you calculate the standard deviation of the sample before comparing to a standard normal? this topic is sending me mad...
Excellent explanation
Why is i-.5/count in the second columns? DId not understand? Please explain.
In this case we standardized the x scale were as in the Z score case we standerdised the x Vals
What software do you use to draw on screen???
Jalayer Academy Shouldn't we have x values on x-axis and z-values on y-axis? Am i wrong?
to show the values are in the normal distribution curve, z is always on horizontal axis. Thats how a curve would be made.
how he select the pencil in excel and draw
Why is the probability equal to (i - 0.5) / n ?
Chiyui Leong i'd like to know it too, but i think it's just a way to divide the values from 0 to 1 with equal intervals
I am guessing that the confidence level is 95% and the 0.5 represents the a value
Buen video, pero no tengo la opcion en excel de "Norm.s.inv". Como podria solucionarlo?
en español la funcion es: =INV.NORM.ESTAND(probabilidad)
that was awesome, thank you very much. how about t.distribution?
Helped me, thanks.
why is my probability more than 1. :C
thank you
This dude sounds like David Blaine
arrange the data first