Statistics: Organisation of Data · Class 11 · CBSE · Commerce Economics
A grouped frequency distribution is being prepared for the heights of students. Which arrangement of class intervals follows the exclusive method and…
Practice question from Statistics: Organisation of Data (Class 11 · CBSE · Commerce Economics), with the correct answer and a step-by-step solution.
hard · MCQ · Q-9A5D5F
A grouped frequency distribution is being prepared for the heights of students. Which arrangement of class intervals follows the exclusive method and ensures that no height is counted twice?
- A.140–149, 150–159, 160–169
- B.140 ≤ h < 150, 150 ≤ h < 160, 160 ≤ h < 170Correct answer
- C.140–150, 150–160, 160–170, with both limits included
- D.140–150, 151–161, 162–172
Solution
Under the exclusive method, the upper limit of one class is excluded and becomes the lower limit of the next class. Thus, the intervals 140 ≤ h < 150, 150 ≤ h < 160 and 160 ≤ h < 170 are continuous and non-overlapping.
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