How to Find Variance and Standard Deviation with the TI-84

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Learn how to use the TI-84 family of graphing calculators to find the variance and standard deviation of a data set.
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24 авг 2024

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Комментарии : 44

@brynnagrace- 3 года назад

New favorite math youtuber. I was about to cry.

@MathandStatsHelp 3 года назад

I'm sorry you were about to cry.

@emilyr6675 4 года назад

thank you. you saved me from throwing my phone across the room 😂😂

@yvonnerodgers8927 3 года назад

Thank you so much I wasted an entire day trying to figure it out... super helpful..took me minutes after your video

@Capitan_Chaos 3 месяца назад

Thanks for this. I was doing this by hand because I don't know how to use stat crunch yet.

@lezolohan1019 11 месяцев назад

Queen you saved me

@richardquiles5181 4 года назад

Thank you so much, you have no idea how much this helped, my professor tells us to ask again next semester when we ask him a question

@MathandStatsHelp 4 года назад

I'm sorry to hear you are in a situation like that. It's frustrating!

@TheJharris23 4 года назад

Richard Quiles get him fired and report him to the dean

@sarahdrulias5133 Год назад

Thank you so much for this! I had almost given up on my graphing calculator!

@MathandStatsHelp Год назад

I'm glad the video helped. Graphing calculators are amazing tools, but can be frustrating!

@danielavelasquez8826 3 года назад

THANK YOU STRAIGHT TO THE POINT LOVE IT

@fastronaut909 5 лет назад

You saved the day! I wish every math professor I had taught like this!

@zofiamosiej4169 Год назад

you saved my grade thx

@MathandStatsHelp Год назад

You're welcome

@alexarnold174 Год назад

Great video, this gal is super sharp. Thanks so much for the help.

@MathandStatsHelp Год назад

Glad it helped you

@JohnSmith-vi9xb 11 месяцев назад

thank you for this every other video is made in such an unprepared format.

@jaelisavega7027 6 лет назад

Thank you!very detailed and nice pace, much appreciated! This is a way easier way to find the Variance!

@MathandStatsHelp 6 лет назад

It is definitely easier in the calculator! I'm glad you found it helpful.

@cannedocean Год назад

Thank you I did not want to do Sx by hand!

@MathandStatsHelp Год назад

It's definitely not practical to do it by hand.

@deringthomas5363 5 лет назад

Genius.

@dinofrog926 2 года назад

you are the best.

@esaer2337 6 лет назад

THANK YOU!!!!

@MathandStatsHelp 6 лет назад

You're welcome. Glad it helped.

@jeannettevillalobos6307 5 лет назад

Thank you so much! I learned so much from watching your video.

@MikaMills-ci8xq 3 месяца назад

what if the question doesnt have any data set but asks for variance and deviation for samples of the following (n=8, Ex^2=87,Ex=26)

@christinamichael6048 5 лет назад

QUEEEEEEEEEEEEEEEEEEN YOU SAVED MEEEEEEEEEEEE THANK YOUUUUUUUUUUUU :)

@MathandStatsHelp 5 лет назад

I'm glad I was able to help!

@vaibhavishah5814 3 года назад

Hi how do you enter negative values into that because when I try to calculate with negative numbers it says error?

@MathandStatsHelp 3 года назад

Make sure you use the negative button (-) left of enter, and don't use the subtraction button. The calculator sees them differently.

@vaibhavishah5814 3 года назад

@@MathandStatsHelp I use the negative button and it still says error for some reason :(

@meganharing5075 Год назад

@@MathandStatsHelp thank you soo much!!!

@meganharing5075 Год назад

I had the same exact question/ problem with it

@jackiekay3481 5 лет назад

You are great. Thank you

@mageic7001 3 года назад

Why is the Sx blank on my ti-84? everything else shows up fine

@MathandStatsHelp 3 года назад

It will do that if you are finding the 1-var stats of a probability distribution. Normally it shows up. It's hard to say without looking at the data set.

@mageic7001 3 года назад

@@MathandStatsHelp What does the frequency list on 1-var stats mean?

@MathandStatsHelp 3 года назад

You can try clearing you memory by hitting 2nd +7 1 2. It won't show up if it's a probability distribution. You can also try going to 2nd STAT arrow over to math and select the one that says standard deviation. I can't remember the number off the top of my head.

@MathandStatsHelp 3 года назад

@@mageic7001 you use it if you are finding a weighted mean or if you put the frequency of values in another column. Leave it blank if you aren't using a frequency list.

@karlz9162 3 года назад

How do you do when you have ex 200 observation...

@RemotHuman Год назад

what app is that that simulates the calculator?

@MathandStatsHelp Год назад

I have the teaching software from TI. I know they have student software available for purchase. There's also a free online graphing calculator called ClassCalc that does most of the things the TI-84 does