anonymous
  • anonymous
Starting with the data values 70 and 100, add three data values to the sample so that the mean is 86, the median is 82, and the mode is 82. Please show all of your work.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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lgbasallote
  • lgbasallote
have you tried trial and error?
anonymous
  • anonymous
yes it just confuses me a bit more
lgbasallote
  • lgbasallote
actually....it's not much of "error"... you know the start is 70 and the last is 100...then there are three blanks in the middle 70 _ _ _ 100 right?

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anonymous
  • anonymous
yes
lgbasallote
  • lgbasallote
then it says the median is 82...so what do you think should you do?
anonymous
  • anonymous
theoretically, it should look something like 70+82+82+x+100/5= 66.8
lgbasallote
  • lgbasallote
exactly
lgbasallote
  • lgbasallote
except... it says the mean is 86 so it should be (72 + 82 + 82 + x + 100)/5 = 86
anonymous
  • anonymous
ohh. So, then how do you find that x?
lgbasallote
  • lgbasallote
that should be \[\frac{70 + 82 + 82 + x + 100}5 = 86\]
lgbasallote
  • lgbasallote
to solve for x, you should multiply both sides by 5 first
anonymous
  • anonymous
so have 5*86, which comes to 430, and I believe we can subtract the original 334 by 430, right?
lgbasallote
  • lgbasallote
right
anonymous
  • anonymous
awesome. That missing number would come to be 96. Thank you!
lgbasallote
  • lgbasallote
right

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