In a grouped frequency distribution, intervals should be

In a grouped frequency distribution, intervals should be (a) Mutually exclusive

(b) Exhaustive

(c) Both A and B

(d) Neither A nor B

✅ Correct option: (c) Both A and B

Explanation:

In a grouped frequency distribution, class intervals must be mutually exclusive, meaning a value can belong to only one class, and exhaustive, meaning all possible values are included. This ensures clarity, accuracy, and completeness in data presentation. Overlapping intervals or missing data ranges create confusion and distort interpretation. Hence, both conditions must be satisfied.

10 Related PPSC Facts:

Intervals must not overlap. Each value fits one class only. Exhaustive intervals include all data. Proper grouping improves clarity. Frequency distributions summarize data. Equal class width preferred. Open-ended classes reduce precision. Grouped data loses some detail. Histograms use grouped data. Class limits define intervals.