Download App

Statistics and Probability — Maths STD 10 — Question

CBSE BoardEnglish MediumSTD 10MathsStatistics and Probability1 Mark
MCQ
Choose the correct answer from the given four options:
In the formula $\bar{\text{x}}=\text{a}+\frac{\sum\text{f}_\text{i}\text{d}_\text{i}}{\sum\text{f}_\text{i}},$ for finding the mean of grouped data di’s are deviations from a of:
  • A
    Lower limits of the classes.
  • B
    Upper limits of the classes.
  • ✓
    Mid points of the classes.
  • D
    Frequencies of the class marks.
✓

Answer

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

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from Statistics and Probability→Statistics and Probability — all question types→Maths STD 10 question papers→CBSE Board STD 10 question papers→CBSE Board question paper generator→

Similar questions

Two concentric circles of radii $13 cm$ and $5 cm$ are given. The length of the chord of the larger circle which touches the smaller circle is
→
The coordinates of the fourth vertex of the rectangle formed by the points (0, 0), (2, 0), (0, 3) are,
→
If the sum of the roots of the equation $k x^2+2 x+3 x=0$ is equal to their product, then the value of $k$ is :
→
If $\sin \theta+\cos \theta=\sqrt{2} \cos \theta, \theta \neq 90^{\circ}$, then $\tan \theta=$
→
A system of two linear equations in two variables has infinitely many solutions, if their graphs :
→
If the second term of an $AP$ is $13$ and its fifth term is $25,$ then its $7^{th}$ term is
→
If $\sin \theta=\cos \theta,\left(0^{\circ}<\theta<90^{\circ}\right)$, then value of $(\sec \theta \cdot \sin \theta)$ is :
→
The distance between the points $(\text{a}\cos\theta+\text{b}\sin\theta,0)$ and $(0,\text{a}\sin\theta-\text{b}\cos\theta)$ is :
→
During conversion of a solid from one shape to another, the volume of the new shape will :
→
A box contains $90$ discs, numbered from $1$ to $90$. If one disc is drawn at random from the box, the probability that it bears a prime number less than $23,$ is :
→