How to Calculate a Z-Score and Find a Corresponding Probability

This video explains what a z-score is and then goes through 1 example of how to find a z-score and then find a corresponding probability.

#probability #zscore #mathematics

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[cristinabarros]

you simplified things so much easier than all the other youtube videos i've seen on the subject

[blackcherryful]

Finally a video that explains the concepts clearly. Thank you!

[jeremykonrote]

Just started online classes a few weeks ago here in Fiji and today I had Mathematics involving this topic of z-scores and my teacher didnt explain very well. I'm grateful for this explanation. Have a great day :)

[ashleydalusma]

Thank you so much !! It mean't so A LOT TO ME. We are now learning about normal percentile I am so CONFUSED SADLY.

[chiefwakanda]

Wow, statistics is currently frustrating, but I'm so glad I took the initiative in looking for YT vids and finding this video. When you broke it down into words, I was like "Ohhh!!! that's why the formula is what it is, that's what the z value represents on the graph, and that's why the shading takes place in this direction!". Sometimes the words are all one needs, and it wasn't fair bc the professor used temperature as his only examples bc at first i was confused how this plays out using nonzero numbers "ie. having 200 counting as the mean and working from that, but your example was almost exactly like my hw problem and the jungle that was my mind all of a sudden untangled itself and it clicked. All this to you haha. You have just earned a subscriber

[meenakshisundarrajan]

Thank you for this video! Your explanations helped me understand this concept.

[binder]

You have a clear audible and understandable voice and well structured lesson.
Thank you mam.

[shrini]

Very clear explanation ...Thank you so much!

[yacoozysan]

best video from all on explaining z values

[ceciliacastaneda]

Awesome. I understood you better than I understood my teacher..and today is my midterm...

[AristonSparta]

In the age of online schooling, students are left to teach themselves.

One student helps others by posting a video...

Dun dun dun! Cue awesome music 🎵

[binder]

Thank you revising 10 year after my MBA.

[ryanweltz]

This was pretty helpful, like really!


Though this is not part of this lesson I do have a something to ask
It's still statistics

Let's say you need to find

P (z > 1.92)
P (z <1.92)
P (z > -1.92)
P (z < -1.92)

Found this in my sister's textbook and tried to answer it but I got stumped hard.

Like, they have the same answers, or I'm missing something (I pick the latter part)

Again, really enjoyed this video!

[sophiahalimahhartono]

Hi! Thank you for making this video, it really helps
I want to ask, what if we got a z score greater than 4? is there any equation of it?

[jagadeesanjack]

Is it possible to calculate the probability using z score without table ???..BTW Thanks for the crystal clear explanation

[marbleskanicas]

I agree with blackcherry comment below. Very clear explanation

[megamindcoco]

I'm struggling with a problem. Find the corresponding​ z-scores. Which baby weighs relatively ​more? Select the correct choice below and fill in the answer boxes to complete your choice.If I'm comparing Z zones. 3375-3000/900 =.416 and 3775-3400/560=.669 I have one come out to .416 and the other .669, which number is larger?

[divyanshsrivastava]

what is the formula for finding the probability using z am kind of required to use it without the table and i don't know the formula...awesome explanation btw..thanks

[nanaamponsah]

the bell shape must not touch the axis its asymptote

[nallypatak]

Hello.. thank you for that explanation. May I ask what could be the formula if only x is given? Thank you.