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Look at this set of 66 numbers:\newline9,9,9,7,4,69, 9, 9, 7, 4, 6\newlineHow would the median change if the number 22 replaced the number 66 in the set?\newlineChoices:\newline(A)increase\newline(B)decrease\newline(C)no change

Full solution

Q. Look at this set of 66 numbers:\newline9,9,9,7,4,69, 9, 9, 7, 4, 6\newlineHow would the median change if the number 22 replaced the number 66 in the set?\newlineChoices:\newline(A)increase\newline(B)decrease\newline(C)no change
  1. Identify original set: Step 11: Identify the original set of numbers and calculate the median.\newlineOriginal set: 9,9,9,7,4,69, 9, 9, 7, 4, 6\newlineSort the numbers: 4,6,7,9,9,94, 6, 7, 9, 9, 9\newlineSince there are 66 numbers, the median is the average of the 33rd and 44th numbers: (7+9)/2=8(7 + 9)/2 = 8
  2. Replace number 66: Step 22: Replace the number 66 with 22 in the set and calculate the new median.\newlineNew set: 9,9,9,7,4,29, 9, 9, 7, 4, 2\newlineSort the numbers: 2,4,7,9,9,92, 4, 7, 9, 9, 9\newlineThe new median is the average of the 33rd and 44th numbers: (7+9)/2=8(7 + 9)/2 = 8
  3. Compare original and new median: Step 33: Compare the original median and the new median to determine the change.\newlineOriginal median: 88\newlineNew median: 88\newlineSince both medians are equal, there is no change in the median.

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