Question

Given below are the amount of rainfall in mm for 20 days in a small locality. Find the mode of the rainfall data.
5.0, 5.1, 5.1, 4.9, 5.2, 5.2, 5.1, 5.0, 5.0, 5.1, 5.1, 5.2, 5.0, 5.1, 5.1, 4.9, 5.1, 5.0, 4.9, 5.0.

• A. 4.9
• B. 5.0
• C. 5.1
• D. 5.2

Answer 1

The correct option is C 5.1

We know that the mode of a set of observations is the observation that occurs most often.
From the given rainfall data, the rainfall of 5.1 mm occurs most number of days ( 8 days), 5.0 mm occurs for 6 days, 5.2 mm occurs for 3 days, 4.9 mm occurs for 3 days.
Therefore, the mode of the rainfall data is 5.1 mm.