rainbow_rocks03
  • rainbow_rocks03
3RD ONE. For the data shown in the stem-and-leaf plot, what is the effect on the mean and median of adding the value 20 to the data set? A. The mean is decreased by about 0.1 and the median is decreased by 2. B. The mean is decreased by about 0.1 and the median is decreased by 3. C. The mean is decreased by about 0.15 and the median is decreased by 2. D. The mean is decreased by about 0.15 and the median is decreased by 3.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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rainbow_rocks03
  • rainbow_rocks03
http://static.k12.com/calms_media/media/1417500_1418000/1417693/1/1349366d505f54d9f968044c6fe97ec47facad33/FGA_130917_261016.jpg
Black_ninja123
  • Black_ninja123
What do you think the answer is?
rainbow_rocks03
  • rainbow_rocks03
umm...

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More answers

rainbow_rocks03
  • rainbow_rocks03
A?
Black_ninja123
  • Black_ninja123
do the mean without adding the extra 20 and when you get the answer than do it again with the extra 20 and see the difference and its not A
rainbow_rocks03
  • rainbow_rocks03
IDK what the answer is.
Black_ninja123
  • Black_ninja123
its D
rainbow_rocks03
  • rainbow_rocks03
how?
Black_ninja123
  • Black_ninja123
When you do the mean without the 20 its 22.56 and when you do it with the extra 20 its 22.41 22.56-22.41=0.15 so it can't be a or b
rainbow_rocks03
  • rainbow_rocks03
oh I think I understand
Black_ninja123
  • Black_ninja123
And when you do the mean you get 23 but if you add the extra 20 you get 20 20-23=3
Black_ninja123
  • Black_ninja123
so D
Black_ninja123
  • Black_ninja123
Sorry i'm really horrible at explaining stuff
rainbow_rocks03
  • rainbow_rocks03
it's okay
rainbow_rocks03
  • rainbow_rocks03
thx
Black_ninja123
  • Black_ninja123
Np

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