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paprs wr easy.....ntn to wry abt....
Quote from: demonrc on June 05, 2009, 01:18:44 pmpaprs wr easy.....ntn to wry abt....wat was the degree of freedom..? and the low standard deviation values show more accuracy right?
38 was the degree of freedom...!!
Quote from: demonrc on June 06, 2009, 04:37:30 am38 was the degree of freedom...!! 38?! i wrote 1! whered you get 38 from?! or 19?...theres only two ph being considered...!
Quote from: plasmatissue on June 06, 2009, 12:20:35 pmQuote from: demonrc on June 06, 2009, 04:37:30 am38 was the degree of freedom...!! 38?! i wrote 1! whered you get 38 from?! or 19?...theres only two ph being considered...!it wz sed in d ques......readings ver taken at HOURLY intervals for 20 HRZ!!! dt mnz 40 readings ver takenbt i wrote 39
degree of freedom for t test is (n-1)+(n-1) right? with n=no of data for 1 ph. so the ans is 38.