what is a z table

[dbansal]

Hi. I bumped into this gem and found it to be very clarifying. However I wanted to make sure there was no mistake here.
https://www.bionicturtle.com/what-is-a-z-table/

On the left hand graph (the distributions) shouldn't the title read Pr(z<=1.35) = 91.15? The graph on right probably needs correcting as well to be 41.15 not 49.95.

Please correct me if I am wrong!

 

[David Harper CFA FRM]

Hi @dbansal Thanks for finding that (you are reminding me to make sure it gets included in the revised Miller Note + XLS that we are soon to publish)! Yikes, you seem to be correct as =NORM.S.DIST(1.35,TRUE) = 0.911492009; and the table itself shows 0.9115. Similarly, Pr(0 < Z < 1.35) = 0.911492009 - 0.5 = 0.411492009. Great eye for detail!

We will fix this! (cc @Nicole Seaman )

 

[luan22]

thanks David Harper CFA FRM