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correlations & TI-85
Message posted by Helen on October 15, 1999 at 12:00 AM (ET)
does anyone know how if the TI-85
can solve r? and if so, how?
thanks
READERS RESPOND:
(In chronological order. Most recent at the bottom.)
Re: correlations & TI-85
Message posted by JG on October 15, 1999 at 12:00 AM (ET)
If you can do regression, then you can get r from the slope - b - . We have that r=b*s(x)/s(y) . There are any way of calculating r including s(xy)/(s(x)*s(y))=r .
Re: correlations & TI-85
Message posted by Vern Myers on October 20, 1999 at 12:00 AM (ET)
I'm not personally familiar with the TI-85, but it may have similar functions to those on my TI-36. On the TI-36, you enter data in pairs using the "STAT 2" mode. You can then get the slope and intercept of the regression by using the keys marked "SLP" and "ITC" (on the 2nd key level). You get "r" (the correlation coefficient) using the key marked "COR" on the third key level.
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