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Stastics — Maths STD 10 — Question

CBSE BoardEnglish MediumSTD 10MathsStastics1 Mark
MCQ
While computing the mean of the grouped data, we assume that the frequencies are :
  • A
    Evenly distributed over the classes.
  • ✓
    Centred at the class marks of the classes.
  • C
    Centred at the lower limits of the classes.
  • D
    Centred at the upper limits of the classes.
✓

Answer

Correct option: B.
Centred at the class marks of the classes.
While computing the mean of the grouped data.
we assume that the frequencies are centred at the class marks of the classes.

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