Mean, Variance, and Standard Deviation of Discrete Random Variable-TI-84

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Use the TI-84 to find the mean, variance and standard deviation of a discrete random variable.
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12 сен 2024

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Комментарии : 50

@piperdecrescenzo Год назад

the amount of information you have taught me in this video compared to a whole semester of prob and stat is astronomical truly. thank you

@MathandStatsHelp Год назад

Glad you found it helpful!

@gerigarcia4464 2 года назад

I have been trying to figure this out for longer than I'd like to admit. Thank you for this, you just saved me from an immense amount of frustration lol

@MathandStatsHelp 2 года назад

I'm glad the video helped you

@peachfuzz222 5 лет назад

I want to actually hug you, this was so helpful! I have a TI-83 Plus so I was incredibly confused with my textbook's description of how to solve this on the calculator, but now I understand it was telling me how to solve on a TI-84 (but still with a fraction of the detail in which you explained it). THANK YOU :)

@MathandStatsHelp 5 лет назад

Glad you found it helpful!

@JoeMama-zh4bk Год назад

its not that serious bro

@dizzytheday5586 4 года назад

7:24 to see how to do this on a TI-83. Thank you.

@lebrinrajanlevi 3 года назад

Wow, I am not a Math person, but need Stats for my degree, and I had no idea how to find this on the calculator. You are great help.

@MathandStatsHelp 3 года назад

I have all of my videos nicely organized on my website. It's free to use: mathandstatshelp.com/statistics/

@lebrinrajanlevi 3 года назад

@@MathandStatsHelp Thank you so much :)

@nickabstract6774 10 месяцев назад

THANK YOU every other video i found didn’t show how to do it on the calculator

@poopoopotamus Год назад

You're really great at teaching! Thank you so much!!! wish you were my professor

@MathandStatsHelp Год назад

Thank you. I have a lot of content, so hopefully it can help you through your course!

@codewl 6 лет назад

Thank you so much. You clip is extremely helpful since I did not know what to do next with the frequency list; I am using TI-84 plus, which presents a different list from TI-83 when it comes to CALC.

@MathandStatsHelp 6 лет назад

I'm happy to hear it helped you.

@codewl 6 лет назад

^.^

@jaxenmorphis1537 2 года назад

Thanks! Great for checking my work to make sure I did the calculations correctly. :D

@amornzenitram6137 3 года назад

THANKYOU still I am confused but at a better understanding!

@sooome9294 5 лет назад

I have the older TI 84 Plus Silver version and it really helped you explaining how to get to L1,L2, I have notes that I cannot find. Thank you, well explained, was able to write good notes.

@user-fd2gh7gv5m Год назад

Thank you! You made it so clear, I finally understand what I am doing.

@rohanchung2185 Год назад

Thanks so much. Very clear tutorial and explanation. God's continued blessings Maths and Stats Help.

@MathandStatsHelp Год назад

You're welcome. Glad it helped

@shawneenorman8533 4 года назад

Super helpful in these times of online learning. thanks so much!!!!

@kaylinanderson9678 3 месяца назад

Thank you so much for this video

@unf4th0mable Год назад

THANK YOU SO MUCH YOU ROCK

@desireemiddleton Год назад

Lifesaver. Thank you!!

@MathandStatsHelp Год назад

You're welcome!

@chineduejeh8948 4 года назад

Amazing Video! Thank you for the help.

@temishabaker2404 7 лет назад

Thank you. All the other videos were on the basic TI 84 and skipped the step of enter into the FreqList! I had trouble finding your video, because it does not say TI-84 Plus

@MathandStatsHelp 7 лет назад

Thanks for letting me know. I will go and add TI-84 plus. They are basically the same calculator. Glad this helped you.

@temishabaker2404 7 лет назад

No problem. The steps are just a bit different on the TI-84 Plus. Without it, I was stuck. Thanks again!!

@Byokku2013 2 года назад

you the bomb! very helpful!

@MathandStatsHelp 2 года назад

Thank you! Glad to hear it was helpful for you!

@greshmm8753 Год назад

I hope you see this.. Whenever I put in the numbers, same way, same lists, it come up with an error saying “Must be an integer” for the second list.

@MathandStatsHelp Год назад

I've never seen that error message. You may want to try to clear your memory. Hit 2nd,+ 7 1 2 After resetting the memory, try again.

@jesustakethewheel8846 4 года назад

You really helped thank you 😗

@Dakilangmanok 4 года назад

Does it matter if the Ti84 converts a number in your list to scientific notation before you get the final answer?

@MathandStatsHelp 4 года назад

No, it's fine

@sabeeharozi7139 2 года назад

I have a question regarding the problem you solved. As I got everything right as I follow you but I am confused when we did on calculator why n(numbers are not shown 5) it shows n=1. For each question I got n=1 whatever the question data is. Why it always show n=1?

@MathandStatsHelp 2 года назад

n is the sum of the frequencies. In this case, because it's a probability distribution, the sum of the frequencies is always 1, because that is one of the requirements of a probability distribution the sum of the probabilities has to be 1.

@iPurrifyy 4 года назад

For a distribution table bigger than 2 list, would you have to use 2-Var stat on your calculator & put in the frequency list the other columns of #s?

@MathandStatsHelp 4 года назад

2-var stats is used when you are comparing two different variables. Sometimes textbooks can't fit all of the information into one column, so without seeing the problem, it's hard to say.

@iPurrifyy 4 года назад

Math and Stats Help so like if there’s an x & y variables and an f(x) & f(y) you use 2-Var stats ?

@MathandStatsHelp 4 года назад

Yes, more likely in statistics instead of being listed in the problem as x and y, it might be listed as heights of males in the US and heights of males in Kenya. That would be two variables that you are comparing to see if there is a difference.

@iPurrifyy 4 года назад

Math and Stats Help ok perfect. Just making sure cuz some of the problems in my book/hw had x&y variables & f(x) & f(y). One of the problems they gave us x & f(x) but we had to find Y & f(y) and it was somewhat confusing