JAMB 2015 Economics · Question 61

The frequent value that occurs most in a data is

Options

  1. A.median
  2. B.mean
  3. C.mode
  4. D.range

Answer: C. mode

Explanation written with AI and checked against the answer key

Analyze the question: It asks for the name of the value that appears most frequently in a set of data. This is a basic statistics question on measures of central tendency.

Explain the concept: Each option measures something different:

  • Median: the middle value when the data is arranged in order.
  • Mean: the arithmetic average, found by adding all values and dividing by how many there are.
  • Mode: the value that occurs most often in the data.
  • Range: the difference between the highest and lowest values. It measures spread, not a typical value.

Worked example: Take the data 2, 3, 3, 4, 5, 3, 6.

  • Mean = (2+3+3+4+5+3+6) ÷ 7 = 26 ÷ 7 ≈ 3.71
  • Median: arranged as 2, 3, 3, 3, 4, 5, 6, the middle value is 3
  • Mode: 3 appears three times, more than any other value, so the mode is 3
  • Range = 6 − 2 = 4

The value that occurs most often is 3, and that is the mode.

Answer: The value that occurs most frequently in a data set is the mode.

Tip: Link the words "Mode" and "Most". Both start with "Mo", so mode is the value that appears the most. Also remember that a data set can have more than one mode (bimodal) or no mode at all if no value repeats.

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