Neco 2021 Geography Question 16

Practice objective / multiple choice question 16 from the 2021 Neco Geography examination.

Neco 2021 Geography Objective / Multiple Choice Hard Difficulty
Question 16 NECO • 2021 • GEOGRAPHY • objective

Table: Jan 80, Feb 70, Mar 120, Apr 150, May 200, Jun 250, Jul 300, Aug 280, Sep 220, Oct 160, Nov 110, Dec 90 (mm). (a) Calculate the mean monthly rainfall. (b) Determine the median monthly rainfall (the average of the two middle values when the data are ordered). (c) Using the mean from (a) and the median from (b), the rainfall variability index is defined as \( \text{RVI}=\frac{\text{Mean}-\text{Median}}{\text{Median}}\times100\% \). Compute the RVI to two decimal places. (d) A month is classified as 'wet' if its rainfall exceeds the mean by more than 20\%. How many months are wet?

Answer Options

A. Mean = 170.00 mm; Median = 155 mm; RVI = 9.68%; Wet months = 3
Correct Answer B. Mean = 169.17 mm; Median = 155 mm; RVI = 9.14%; Wet months = 4
C. Mean = 169.17 mm; Median = 160 mm; RVI = 5.73%; Wet months = 5
D. Mean = 165.00 mm; Median = 150 mm; RVI = 10.00%; Wet months = 2
Correct Answer
B
Correct Option:
Mean = 169.17 mm; Median = 155 mm; RVI = 9.14%; Wet months = 4

About This Question

This is Neco 2021 Geography Question 16. It is one of the objective questions from the 2021 Neco Geography examination.

Difficulty level: Hard .

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