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Statistics — Maths STD 10 — Question

Maharashtra BoardEnglish MediumSTD 10MathsStatistics1 Mark
MCQ
In the formula $\overline{\text{X}}=\text{a}+\frac{\sum\text{f}_\text{i}\text{d}_\text{i}}{\sum\text{f}_\text{i}}$ for finding the mean of grouped data di’s are deviations from a of:
  • A
    lower limits of classes.
  • B
    upper limits of classes.
  • ✓
    mid-points of classes.
  • D
    frequency of the class marks .
✓

Answer

Correct option: C.
mid-points of classes.
We know that, $d_i = x_i – a$
i .e , $d_i$‘s are the deviation from a mid$-$points of the classes.

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