 # TI-30X IIS: Standard Deviation

how to find standard deviation on ti-30x iis This is a topic that many people are looking for. cfiva.org is a channel providing useful information about learning, life, digital marketing and online courses …. it will help you have an overview and solid multi-faceted knowledge . Today, cfiva.org would like to introduce to you TI-30X IIS: Standard Deviation. Following along are instructions in the video below:
This video. Im gonna show you how to do standard deviation on your ti ti 30x calculator and the best way to do this as always is just go into a very simple and very quick example just got saved either here youll notice that the twelves are repeated. So im going to have to use a frequency function.
So that we dont have to type 12. Repeatedly so more efficient okay so the first thing we need to do is get our calculator into stat mode. Lets go.
Its already ins that would be ill show you again so second function and then stacked. Which is on this data. Key and we want one variable statistics.
Weve just got one set of data.

If we had like an x and a y series maybe we were doing some sort of regression. You would need two variable so just press equal. So the second function stat equals that gets us into the stat mode.
So we can now enter data. So unsurprisingly you just press. The data key.
Ive already entered the data in here. So just go five press down twice seven down twice nine time twice then 10 to the 12. Were doing 12.
Ill show you that again 12.

Then down put in the frequency is five down the last number with us for by then with a frequency of 1. This is very simple to do just enter your data and press down twice. That theres nothing new or if youre doing frequency just change the values of the frequency to the number.
Its over five years. So it grating frequencies by last step very simple we just do the calculation this calculator does in a very nice way as youll see if we press the stat via button. Here just press that calculates everything for you so weve got n of nine.
You cant b.s there is of course nine of them press their long key. We get to x bar.
X.

Bar. Is our mean so that gives us the mean of the data. Moving along one more time.
Weve got this three point three. Two this is what the calculator calls s x. This is your standard deviation based on the n.
Minus. One definition. So youre taking your standard deviation and on the bottom of the fraction youve got n minus.
One move along one more time.