mouth 0 #1 May 29, 2012 OK all you smarty pants...I'm taking Statistics graduate level and I have NO FREAKIN' clue what I'm doing. Anyone think you can help? -- 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
billeisele 122 #2 May 30, 2012 I'd have a 50% chance of being correct with any helpGive one city to the thugs so they can all live together. I vote for Chicago where they have strict gun laws. Quote Share this post Link to post Share on other sites
PLFKING 3 #3 May 30, 2012 Statistically, my pants are no smarter than your pants. They are both inanimate objects, and therefore have no cognitive or teaching talents. Did you hear the one about the constipated mathematician ? Don"When in doubt I whip it out, I got me a rock-and-roll band. It's a free-for-all." Quote Share this post Link to post Share on other sites
oldwomanc6 38 #4 May 30, 2012 QuoteStatistically, my pants are no smarter than your pants. They are both inanimate objects, and therefore have no cognitive or teaching talents. Did you hear the one about the constipated mathematician ? Don One and one finally made two?lisa WSCR 594 FB 1023 CBDB 9 Quote Share this post Link to post Share on other sites
CSpenceFLY 1 #5 May 30, 2012 85% of all statistics are made up on the spot. Quote Share this post Link to post Share on other sites
theonlyski 3 #6 May 30, 2012 Quote85% of all statistics are made up on the spot. That's only true 73.8% of the time though."I may be a dirty pirate hooker...but I'm not about to go stand on the corner." iluvtofly DPH -7, TDS 578, Muff 5153, SCR 14890 I'm an asshole, and I approve this message Quote Share this post Link to post Share on other sites
mouth 0 #7 May 30, 2012 In other words....non of you are any more educated than I am. Where is Bill when ya need him? -- 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
theonlyski 3 #8 May 30, 2012 QuoteIn other words....non of you are any more educated than I am. Where is Bill when ya need him? Why don'tcha just post the question you're needing help with?"I may be a dirty pirate hooker...but I'm not about to go stand on the corner." iluvtofly DPH -7, TDS 578, Muff 5153, SCR 14890 I'm an asshole, and I approve this message Quote Share this post Link to post Share on other sites
oldwomanc6 38 #9 May 30, 2012 Well, you did set the bar at "smarty-pants". If you had raised it 23.49% you would have been 47.82% assured to have had at least one answer that would have proved this point unequivocally.lisa WSCR 594 FB 1023 CBDB 9 Quote Share this post Link to post Share on other sites
mouth 0 #10 May 30, 2012 Here is the problem: 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? -- 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
BillyVance 34 #11 May 30, 2012 Chances are 100% that you hear better than I can. "Mediocre people don't like high achievers, and high achievers don't like mediocre people." - SIX TIME National Champion coach Nick Saban Quote Share this post Link to post Share on other sites
muff528 3 #12 May 30, 2012 QuoteHere is the problem: 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? 66 Quote Share this post Link to post Share on other sites
mouth 0 #13 May 30, 2012 So how did you get 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
ryoder 1,381 #14 May 30, 2012 QuoteSo how did you get 66? 42"There are only three things of value: younger women, faster airplanes, and bigger crocodiles" - Arthur Jones. Quote Share this post Link to post Share on other sites
oldwomanc6 38 #15 May 30, 2012 Quote Quote So how did you get 66? 42 lisa WSCR 594 FB 1023 CBDB 9 Quote Share this post Link to post Share on other sites
muff528 3 #16 May 30, 2012 QuoteSo how did you get 66? 65.5 x 40 = 2620 2620 + 20 = 2640 2640 / 40 = 66 or 90 - 70 = 20 20 / 40 = 0.5 0.5 + 65.5 = 66 Quote Share this post Link to post Share on other sites
muff528 3 #17 May 30, 2012 Quote Quote So how did you get 66? 42 Thanks for all the fish. Quote Share this post Link to post Share on other sites
mouth 0 #18 May 30, 2012 OK that actually made sense. I knew it would increase but wasn't sure how to determine it and the formula kept showing it going down. Thank you! -- 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
missbrz 0 #19 May 30, 2012 Quote Quote Here is the problem: 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? 66 agreed. now he'll probably want an explanation too... Quote Share this post Link to post Share on other sites
VideoFly 0 #20 May 30, 2012 65.5 X 40 = 2,620 2,620 + 20 (the difference between the score of 70, corrected to be 90) = 2,640 2,640/40 = 66 Quote Share this post Link to post Share on other sites
mouth 0 #21 May 30, 2012 Elementary teachers do not think above the whole add, subtract, multiply, or divide stage. I'm having to wrap my head around this stuff. Thanks for your help! -- 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
JerryBaumchen 1,046 #22 May 30, 2012 Hi mouth, At 42+ yrs ago, I am not of much help. However, on the first day of class the instuctor said that 0% and 100% do not exist, everything will be in between those two numbers. He was probably the smartest mathamatician I have ever known. JerryBaumchen Quote Share this post Link to post Share on other sites
TriGirl 268 #23 May 30, 2012 QuoteOK that actually made sense. I knew it would increase but wasn't sure how to determine it and the formula kept showing it going down. Thank you! It all goes back to the definition of each of those values. The mean is the average: all values added together, then divided by the numbers in the set (n). You add 20 to the total because it's the difference of the incorrect value from the correct (higher) one. If you need the extra step, essentially once you get the sum of all the scores (65.5x40), you "take out" the incorrect value (-70) and replace it with the correct one (+90). With the information given, you would not be able to find the new median.See the upside, and always wear your parachute! -- Christopher Titus Shut Up & Jump! Quote Share this post Link to post Share on other sites
muff528 3 #24 May 30, 2012 QuoteQuoteOK that actually made sense. I knew it would increase but wasn't sure how to determine it and the formula kept showing it going down. Thank you! It all goes back to the definition of each of those values. The mean is the average: all values added together, then divided by the numbers in the set (n). You add 20 to the total because it's the difference of the incorrect value from the correct (higher) one. If you need the extra step, essentially once you get the sum of all the scores (65.5x40), you "take out" the incorrect value (-70) and replace it with the correct one (+90). With the information given, you would not be able to find the new median. Yes, but you would only have to know the position that the replaced "70" occupied in the sequence. The median will still be 64 unless a "70" was #21 in the sequence and it was the only "70" in the string. (since 64 is simply the average of the middle two numbers). Quote Share this post Link to post Share on other sites
TriGirl 268 #25 May 30, 2012 QuoteQuoteQuoteOK that actually made sense. I knew it would increase but wasn't sure how to determine it and the formula kept showing it going down. Thank you! It all goes back to the definition of each of those values. The mean is the average: all values added together, then divided by the numbers in the set (n). You add 20 to the total because it's the difference of the incorrect value from the correct (higher) one. If you need the extra step, essentially once you get the sum of all the scores (65.5x40), you "take out" the incorrect value (-70) and replace it with the correct one (+90). With the information given, you would not be able to find the new median. Yes, but you would only have to know the position that the replaced "70" occupied in the sequence. The median will still be 64 unless a "70" was #21 in the sequence and it was the only "70" in the string. (since 64 is simply the average of the middle two numbers). Ah yes, good point, since "n" is even.See the upside, and always wear your parachute! -- Christopher Titus Shut Up & Jump! Quote Share this post Link to post Share on other sites