2014 · Q94
Consider the following statements pertaining to a frequency polygon of a frequency distribution of a continuous variable with seven class intervals of equal width:
- 1The original frequency distribution can be reconstructed from the frequency polygon.
- 2The frequency polygon touches the x-axis in its extreme right and extreme left.
Which of the above statements is/are correct?
Elementary MathematicsStatistics
- A1 only
- B2 only
- CBoth 1 and 2
- DNeither 1 nor 2
Explanation
With equal class widths the frequencies can be read back from the polygon (statement 1 true), and a frequency polygon is anchored to the x-axis at both ends (statement 2 true).