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Numerical Measures of Central Tendency and Variability

Measures of Central Tendency

Answers

  1. (2+4+6+8) / 4=5

  2. 3
    Because there are 5 numbers, the median is the middle number when they are ranked from lowest to highest.

  3. What is the mode of -2, 4, 0, 3, 0, 2, 4, 4, and 8?

  4. Mean = 85, Median = 84, Mode = 75, so the mean of his scores is the highest.

  5. If the teacher is going to use the median as the final grade, she should only argue the middle score (87). Changing the other scores by 2 points would not affect the median.