Hi, @morganmccall1499, when we put 0 in for the "lower", and X in for the "upper", we're trying to find a X2 value which has some area between 0 and our desired X2 value (that is why we subtract 0.025 from the equation, because this tells the calculator to find the X2 value which has 2.5% of area between 0 and that X2). To find the X2 value which has some area to the right of it, you would enter X as the lower, and E99 as the upper, and then subtract the area to the right of your desired X2 value. If you're always getting an incorrect result (as mentioned at time 3:13) you have one more step to go, which is pressing ALPHA and then ENTER. This is like the "start" button for the calculator to run the X2 cdf function. Using "X" instead of 0 for the lower value is explained starting at time 3:40.
after subtracting alpha/2 from the equation solver and pressing enter, i am not taken to the screen that shows the x value. when i tried an hour ago, it worked. i am following the video directly and am confused why it isn't working anymore.
Hi, Kendall, I'd be happy to try to help you. You said you're subtracting alpha/2 from the end of your equation and pressing enter. Where does it go at that point? What screen do you see? If you do see the "x" but the value isn't changing, remember to press Alpha and Solve (that's the Enter key), it needs to refresh. And, finally, if you'd prefer to avoid using Solver altogether, I recorded a video that shows a 3-line program to add inverse chi square into your calculator at ruclips.net/video/ocYmAj_gal0/видео.html
Hi, Noori, often when we get a strange result on Solver, it's because we missed that one final step of clicking the Alpha button and then clicking Enter. That's what tells the calculator to "run" the program. Or, if you have a TI-84 CE, the programming menu is slightly different than for the TI-84 Plus. I don't have an 84 CE, so unfortunately am not able to help with how to use Solver on that particular calculator.
Wow thanks for this! Great use of the calculator.
is the lower value always 0?
and I'm always getting 0 after pressing enter for the X= value at time 3:13
Hi, @morganmccall1499, when we put 0 in for the "lower", and X in for the "upper", we're trying to find a X2 value which has some area between 0 and our desired X2 value (that is why we subtract 0.025 from the equation, because this tells the calculator to find the X2 value which has 2.5% of area between 0 and that X2). To find the X2 value which has some area to the right of it, you would enter X as the lower, and E99 as the upper, and then subtract the area to the right of your desired X2 value. If you're always getting an incorrect result (as mentioned at time 3:13) you have one more step to go, which is pressing ALPHA and then ENTER. This is like the "start" button for the calculator to run the X2 cdf function. Using "X" instead of 0 for the lower value is explained starting at time 3:40.
after subtracting alpha/2 from the equation solver and pressing enter, i am not taken to the screen that shows the x value. when i tried an hour ago, it worked. i am following the video directly and am confused why it isn't working anymore.
Hi, Kendall, I'd be happy to try to help you. You said you're subtracting alpha/2 from the end of your equation and pressing enter. Where does it go at that point? What screen do you see? If you do see the "x" but the value isn't changing, remember to press Alpha and Solve (that's the Enter key), it needs to refresh. And, finally, if you'd prefer to avoid using Solver altogether, I recorded a video that shows a 3-line program to add inverse chi square into your calculator at ruclips.net/video/ocYmAj_gal0/видео.html
thank you so much you are an angel
thank you!!!!!!!!!!!!!
really helpful, and thank you
i dont know why, but my x value comes out as 4500 every single time....helo....
Hi, Noori, often when we get a strange result on Solver, it's because we missed that one final step of clicking the Alpha button and then clicking Enter. That's what tells the calculator to "run" the program. Or, if you have a TI-84 CE, the programming menu is slightly different than for the TI-84 Plus. I don't have an 84 CE, so unfortunately am not able to help with how to use Solver on that particular calculator.
man your voice is grating
Thankfully, you have the option of using closed captions. Go for it.
ratio