rainbow_rocks03
  • rainbow_rocks03
For the data in the table, the mean score is 15 and the median score is 14. How are the mean and median affected when the outlier 42 is added to the data? Table titled Points Scored with data in the first and only row being 12, 13, 14, 19, 16, 14, 11, and 21. A. The mean and median are not affected. B. The mean and median both increase by 3. C. The mean increases by 3, but the median stays the same. D. The median increases by 3, but the mean stays the same. http://static.k12.com/calms_media/media/1417500_1418000/1417708/1/e2741c82049d3fcbc8867f3110e1da2a
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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rainbow_rocks03
  • rainbow_rocks03
http://static.k12.com/calms_media/media/1417500_1418000/1417708/1/e2741c82049d3fcbc8867f3110e1da2a5040f3fa/FGA_130917_261031.jpg
rainbow_rocks03
  • rainbow_rocks03
Click the second link cause the first one didn't work
rainbow_rocks03
  • rainbow_rocks03
also NO DIRECT ANSWERS

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rainbow_rocks03
  • rainbow_rocks03
Can you help?
rainbow_rocks03
  • rainbow_rocks03
@amistre64
rainbow_rocks03
  • rainbow_rocks03
IDUT=I Don't Understand This
anonymous
  • anonymous
idk
amistre64
  • amistre64
the first thing to help us out is to order it, and how do we determine the value of a mean and median?
rainbow_rocks03
  • rainbow_rocks03
we add all the numbers up?
amistre64
  • amistre64
also, consider that outliers affect the mean .... so 2 options are just not valid to start with
amistre64
  • amistre64
adding up, and dividing is how we find the mean and just picking the number i the middle of an ordered set is how we can determine the median
rainbow_rocks03
  • rainbow_rocks03
IDK what the middle # is.
amistre64
  • amistre64
what does the ordered set look like?
amistre64
  • amistre64
first off, is the mean going to be affected? lets narrow our options
rainbow_rocks03
  • rainbow_rocks03
BRb
rainbow_rocks03
  • rainbow_rocks03
ok im back
rainbow_rocks03
  • rainbow_rocks03
NO DIRECT ANSWERS
rainbow_rocks03
  • rainbow_rocks03
I always say that when I put a board DON'T YALL FOLLOW DIRECTIONS?
amistre64
  • amistre64
focus on the question, not on the spam :)
anonymous
  • anonymous
it didnt say ....
rainbow_rocks03
  • rainbow_rocks03
ok
amistre64
  • amistre64
will 42 affect the mean?
rainbow_rocks03
  • rainbow_rocks03
yes?
amistre64
  • amistre64
it should yes. so that narrows our options
amistre64
  • amistre64
so the question is really, how does it affect the median. wht is our ordered set?
rainbow_rocks03
  • rainbow_rocks03
IDK
amistre64
  • amistre64
in elementary school grades they teach you how to determine if one number is bigger or smaller than another. .... just order the numbers from smallest to biggest.
rainbow_rocks03
  • rainbow_rocks03
11 , 12 , 13 , 14 , 14 , 16 , 19 , 21
amistre64
  • amistre64
good, now we can find the middle
rainbow_rocks03
  • rainbow_rocks03
14?
amistre64
  • amistre64
yep, now adding on the 42, what does the middle become? 11 , 12 , 13 , 14 , 14 , 16 , 19 , 21, 42
rainbow_rocks03
  • rainbow_rocks03
14 still
amistre64
  • amistre64
11 , 12 , 13 , 14 , 14 , 16 , 19 , 21, 42 >>>>>>>>>>< <<<<<<<<<< yep, still 14 so the median doesnt change, but the mean does
rainbow_rocks03
  • rainbow_rocks03
So my answer is D
amistre64
  • amistre64
lets read them A. The mean and median are not affected. ^^^^^ ^^^^^^^^^ false B. The mean and median both increase by 3. ^^^^^^^^^^^ false C. The mean increases by 3, but the median stays the same. ^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^ true enough D. The median increases by 3, but the mean stays the same. ^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^ false
rainbow_rocks03
  • rainbow_rocks03
oops that was what I meant
rainbow_rocks03
  • rainbow_rocks03
I meant to say C
rainbow_rocks03
  • rainbow_rocks03
TY for the help

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