NDA 2016 Mathematics question
Consider the following statements : 1. The mean and median are equal in symmetric distribution. 2. The range is the difference between the maximum value and the minimum value in the data. 3. The sum of the areas of the rectangles in the histogram is equal to the total area bounded by the frequency polygon and the horizontal axis. Which of the above statements are correct?
Answer: (D)
Solution
In a symmetric distribution the mean and the median coincide (statement 1). The range is by definition the maximum minus the minimum (statement 2). A frequency polygon drawn with
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