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


Question

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.

Options

A) 1.35

B) 1.65

C) 1.95

D) 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
∴m + 2r = 1.35 + 2(0.30)
= 1.35 + 0.60
= 1.95

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Dicussion (1)

  • 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
    ∴m + 2r = 1.35 + 2(0.30)
    = 1.35 + 0.60
    = 1.95

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