The model height and range of heights 1.35, 1.25, 1.35, 1.40, 1.35, 1.50, 1.35, 1.50,…

Mathematics JAMB 2005

The model height and range of heights 1.35, 1.25, 1.35, 1.40, 1.35, 1.50, 1.35, 1.50, and 1.20 are m and r respectively. Find m+2r.

  • 1.35
  • 1.65
  • 1.95 checkmark
  • 3.00

The correct answer is: C

Explanation

1.35, 1.25, 1.35, 1.40, 1.35, 1.50, 1.35, 1.50, and 1.20
Modal height = 1.35
Range (r) = 1.50 - 1.20
= 0.30
âˆīm + 2r = 1.35 + 2(0.30)
= 1.35 + 0.60
= 1.95
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