Download App

Statistics and Probability — Maths STD 9 — Question

Gujarat BoardEnglish MediumSTD 9MathsStatistics and Probability1 Mark
MCQ
Write the correct answer in the following:
A grouped frequency distribution table with classes of equal sizes using $63-72$ ($72$ included) as one of the class is constructed for the following data:
$30, 32, 45, 54, 74, 78, 108, 112, 66, 76, 88, 40, 14, 20, 15, 35, 44, 66, 75, 84, 95, 96, 102, 110, 88, 74, 112, 14, 34, 44$. The number of classes in the distribution will be:
  • A
    $9$
  • ✓
    $10$
  • C
    $11$
  • D
    $12$
✓

Answer

Correct option: B.
$10$
Minimum value $= 14$
Maximum value $= 112$
The classes are
$13 - 22, 23 - 32, 33 - 42, 43 - 52, 53 - 62, 63 - 72, 73 - 82, 83 - 92, 93 - 102$ and $103 - 112.$
The number of classes in the distribution will be $10$.

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" from Statistics and Probability→Statistics and Probability — all question types→Maths STD 9 question papers→Gujarat Board STD 9 question papers→Gujarat Board question paper generator→

Similar questions

In the adjoining figure, $\text{AB}\parallel\text{CD}$ and $\text{AB}\parallel\text{EF}$ The value of $x$ is:
→
If $x=1$ and $y=1$ is a solution of both the equations $2 x-3 a y+a^2=0$ and $4 x-5 a y+a^2=0$, then $a=$
→
ABCD is a parallelogram and E is the mid-point of BC. DE and AB when produced meet at F. Then, AF =
→
Express $y$ in terms of $x$ in the equation$ 5x - 2y = 7.$
→
Which of the following is a factor of $(x+y)^3-\left(x^3+y^3\right)$ ?
→
In Fig. O is the centre of the circle such that $\angle A O C=130^{\circ}$, then $\angle A B C=$
Image
→
The coefficient of $x^2$ in $\left(2-3 x^2\right)\left(x^2-5\right)$ is:
→
The empirical relation between mean, mode and median is:
→
The point at which the two coordinate axes meet is called the:
→
Abscissa of all points on the $x-$axis is:
→