Normal Distribution: Calculating Probabilities {TI 84 Plus CE}
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- čas přidán 22. 08. 2024
- In this video I provide a tutorial on how to calculate the probabilities associated with a normal distribution from knowing the mean and the standard deviation.
Do you realize that you put P(8
Hi Patricia, thanks for pointing that out, I hadn't realised I'd done that until you mentioned it. It seems as though youtube has removed any ability to add text overlay on a specific point on a video like they once had which is annoying, so I am going to have to edit and re-upload this at some point when I have the time. Thanks again.
Thanks for clearing that up, I was confused at first and thought I had it all wrong 😂
wow i thought i was doing something wrong. thanks!
I thought I was losing my mind and going dumb or my calculator was broken lol. Thanks @Patricia for the correction.!! You must have eagle eyes and a super focused mind 🤣 🤝🏾👌🏾👍🏾
@@BellCurvedEducation6 years with no edit 😂
In 5 minutes you taught me what my teachers couldn't teach me in 3 weeks. Thank you.
I had to self taught too
I'm not going to lie, my math teacher made absolutely zero sense in class today. I watched this when I realized I had no idea how to do the homework and it helped a bunch
this has been the best video on youtube to explain this
Thanks, I am glad it helped
i cannot begin to describe how thankful i am for you and this video.
Finally! I forgot how to get to a certain screen on the calculator and all of the rest of the videos I watched solved it a different way. This video shows how I originally liked to solve it! Thank you!
you just helped me solve a problem ive been stuck for 2.5 hours thank you
A small simplification is that you can enter -e^99 for very small numbers instead of -1e^99. (this is for entering the lower range on a normal distribution). You can also enter e^99 for very large numbers instead of 1e^99. It saves a couple keystrokes and produces the same exact results (for entering the upper range on a normal distribution).
This is a good point, old habits die hard though as I always enter it like that even when I know I don't need to.
@@BellCurvedEducation The "e" in the calculator is 2.71828. Typing 1e99 is 1 x e^99 = 1 x 2.17828^99
You should instead be using "2nd" then "EE" or "E" on the calculator for 1E99 = 1 x 10^99. (EE stands for Engineering Exponent. e is Euler's number).
@@joshuanorlien8715 Thanks for commenting. I noticed I used the wrong button years ago and thought I had pinned a comment and put it into the video description. But checking and I can't see either, it seems I only made the note on my website of this error, so I need to update this when I am on my computer next. I made the error as I was only just learning to use the TI for myself since the school I work at uses TI when I made this video and had come from being a long time Casio user.
@@joshuanorlien8715 Actually, 1e99 is 1 x e x 99 = 269, which is not all that large (although large enough for this example).
This video is good for revision when I forgot all my normal distribution haha, thanks you helped made me feel less anxious for my exam
OMG THANKS GOD YOU CAME INTO MY LIFE!!!! YOU ARE A LIFE SAVER!!!!!!!! The website for my class doesn’t teach is what -1e99 is or how it’s used so you teaching this is like... amazing! YOU ARE AN ANGEL SENT FROM HEAVEN!!!
This is such a great explanation it made my homework so much easier now that I understand it better thank you!
You seem to be using the wrong "e". The lowercase "e" is actually Euler's number, so about 2.718. When I put in 1e99 on mine, I get about 270. You should actually be using the "EE" button, right above the 7. That is what gives the powers of ten, or infinitely large effect you were talking about, at least on my calculator.
I'm not able to double check this right now, but you could be right. I was new to these calculators when I first made these for my students as I am much more familiar to Casio's but the school I work at use TI's. I know that I realised I had used the wrong button a couple of years ago when working through a question with my students at school, so will have to double check this and maybe redo this video. Thanks for letting me know.
You just saved my ass thank you
the the power 99
Thank you so much. I have a test in a few hours and couldn't figure out how to use the calculator correctly. Thank you!
I watched this after not understanding the subject for 2 months worth of lessons and just got my grade: 8,8/10 TYY
I loved the video, it was very helpful to me. First I watch this channel. It's already got me!
My friend ernesto said thanks for the help! He really appreciates it especially since its his birthday and he spent the entire day stuck on this question. XD
Thank you!!! I really needed to know those "1e99 and -1e99" :)))
I love this video you made me learn in just 6 minutes the problem that I had for like in a week. thank you
Great, thanks. I watched other videos and yours was the one that helped me get the correct answer.
I’m glad it helped
thank u so so much. I was really struggling with how my book explained it hahaha damn but this is such a simple and clear explanation
Thank you explains that put negative and positive in easy way. I have finally got the concept on the calculator. Blessings
This was super helpful!
Amazing video!
Appreciate the video, helped a ton with my business analytics homework
way to make it simple! thank you!
MAN THANK YOU
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Big help brother thank you
I really appreciate this! Thanks for the help. :) I know it's been a while since you posted this, but is this inclusive of our limits of 8 and 14, or not? Some math questions I have ask for a range of, say, 100 to 154 inclusive, and I wasn't sure.
OMG YOU ARE AMAZING
Thank you so much for the help!!! I needed the review! :)
Very helpful. Appreciate this!
Very good!!!
This is amazing! Thank you so much!!
Super helpful and super easy to understand!
Thank you very much! It really helped me!!
Literally finished IB math today
Congrats!
Coming up in 2 months :( wish me luck!!!!
Thanks. You got my brain to think outside the box LOL. only I know what I mean...... Muahahahahahahaaaaaaaaa!
My calculator gives an error when I fill out the P(x
There was an error because you put the minus key instead of the negative key which is located to the bottom near the button three.
@@yaboimick9648 Thank you!! I figured that out luckily :)
@@joannejonker4110 No problem, glad you figured that out.
Dropped a like on this bad boy
Very helpful! Thanks!
helped me so much!! thanks!
I need to solve, "There is a 62% chance that X (with the line on top) is above what value?" I have the average (mu) 105 , standard deviation 20, and the select sample 16. How do I solve?
Hello, I hope somebody sees this I have a problem with my Calculator.
On my Calculator, it doesn't show me the lower, upper part.
It just see this invNorm( that's it I don't have a menü solo I don't know what to do here.
Please HELP
@@taha6141e2c I have the TI-84 Plus CE-T model
@@taha6141e2c thank you for the help... ;-)
To get the largest number you don't type 1e99 as you did. This uses the natural number e. The correct method would use 1E99 and the E is obtained by pressing the the 2nd function key followed by EE (which is above the comma button). This is scientific notation and it has nothing to do with the natural number e. Also the minimum for the distribution should not be negative it should be close to but not exactly zero.
So the correct entry should be 1E-99 not -1e99. You really need to get these things corrected.
Beautiful
thank you so much mate
But what if there is no mean or standard deviation but an upper/lower limit?
Well if it's a normal distribution, the mean should be the distance between each limit halved. Then if you wanna find the standard deviation, the first standard deviation contains 68% of the area under the curve, so 34% from each side. It's not impossible to solve for, but first you're gonna have to solve for your mean (mu) and standard deviation, and then you use the normal distribution function
Austin Cari thank you
THANK YOUUU
nice video
ily wow heart eyes!
so easy now
What was the question again?
thank you kind sir
When I try to do the p(x
The calculator generally shows an error if you use the subtract button for a negative number rather than the negative button. The negative button is to the left of the equals sign and has brackets around it. So when entering -1E99 into the calculator, ensure to use the negative button rather than the subtract button.
@@BellCurvedEducation thank you so much!!!
Very nice thanks !!!!
thank you
thanks !
why do I keep getting Error when trying to do -1e99?
Without seeing what you are inputting, are you using the “negative” button or the “subtract” button for the negative input. Many error messages occur due to using the subtract rather than the negative input.
@@BellCurvedEducation Exactly right. That cured my problem. Use the (-) key not the - key.
crystal!
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she's wrong
this has been the best video on youtube to explain this