muff528 3 #26 May 30, 2012 Yes, if "n" was odd then the median would be known to still be "64" since 70 and 90 are both on the same side of the middle. Quote Share this post Link to post Share on other sites
NWFlyer 2 #27 May 30, 2012 Last time I took statistics was when I was in grad school... and that class was 16+ years ago. So I hardly remember anything, but one thing that did help me getting through my graduate statistics class was having the textbook from a stats class I'd taken at the local community college a couple years before I went back to grad school. The text I used for that class and the text I used for grad school were both your basic intro level classes, but the community college textbook was so much better and clearer. My grad school classmates were always bugging me to borrow the community college text because it was so much less obtuse even though it was covering the same stuff. So basically what I'm saying is that you'll have a 56.4% improved chance of getting an A in the class if you can find different books to explain the same concept, because there's a 97.5% chance that reading about something explained in a different way will cause a "light bulb" moment. "There is only one basic human right, the right to do as you damn well please. And with it comes the only basic human duty, the duty to take the consequences." -P.J. O'Rourke Quote Share this post Link to post Share on other sites
muff528 3 #28 May 30, 2012 Quote ..... With the information given, you would not be able to find the new median. Actually, we do have enough information to determine the new median. It must remain at "64" because "70" cannot possibly have occupied position #21 and satisfied both the original median (64) and the original mode (60) conditions. If the original 70 occupied position 21 then position 20 had to hold 58 leaving no room for any of the two or more 60s that we know must be in there somewhere. Quote Share this post Link to post Share on other sites
mouth 0 #29 May 31, 2012 And just like that I'm confused again.Is it 64 or 66? -- Hot Mama At least you know where you stand even if it is in a pile of shit. Quote Share this post Link to post Share on other sites
muff528 3 #30 May 31, 2012 Quote And just like that I'm confused again.Is it 64 or 66? In your example, with the change the mean goes from 65.5 to 66 and the median remains at 64. Quote Share this post Link to post Share on other sites
mouth 0 #31 May 31, 2012 Muff Muff...nuff said. Thanks -- Hot Mama At least you know where you stand even if it is in a pile of shit. Quote Share this post Link to post Share on other sites
BIGUN 1,406 #32 May 31, 2012 Quote Last time I took statistics was when I was in grad school... and that class was 16+ years ago. So I hardly remember anything, but one thing that did help me getting through my graduate statistics class was having the textbook from a stats class I'd taken at the local community college a couple years before I went back to grad school. The text I used for that class and the text I used for grad school were both your basic intro level classes, but the community college textbook was so much better and clearer. My grad school classmates were always bugging me to borrow the community college text because it was so much less obtuse even though it was covering the same stuff. So basically what I'm saying is that you'll have a 56.4% improved chance of getting an A in the class if you can find different books to explain the same concept, because there's a 97.5% chance that reading about something explained in a different way will cause a "light bulb" moment. The book didn't happen to be "Basic Statistical Analysis" by Springhall? Came with a little management science DOS 3.5 floppy in the back? Man, that book made me fall in love with stats. Every course in Grad School was "Quantitative Methods of..." Course the school had bought their MSM program from Bill's Alma Mater (sans the price tag).Nobody has time to listen; because they're desperately chasing the need of being heard. Quote Share this post Link to post Share on other sites
popsjumper 2 #33 May 31, 2012 What's the odds on 1 jumper out of 66 not being current with USPA? Oh, I dunno...astronomical I would say. My reality and yours are quite different. I think we're all Bozos on this bus. Falcon5232, SCS8170, SCSA353, POPS9398, DS239 Quote Share this post Link to post Share on other sites
jakee 1,563 #34 May 31, 2012 Quote I'm taking Statistics graduate level... Think of a distribution of scores for which the mean is 65.5, the median is 64, the mode is 60, and n = 40. Suppose you later learn that one of the scores is in error. Instead of 70, the score should have been 90. What would be the value for the mean after changing the score of 70 to 90? Graduate of what, English? History? Music?Do you want to have an ideagasm? Quote Share this post Link to post Share on other sites
