Download App

Statistics — MATHS STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceMATHSStatistics5 Marks
Question
Calculate the mean deviation about mean for the following distribution:
Class interval
0-4
4-8
8-12
12-16
16-20
Frequency
4
6
8
5
2
✓

Answer

Classes
fi
xi
fixi
|xi - 9.2|
fi|xi - 9.2|
0-4
4
2
8
7.2
28.8
4-8
6
6
36
3.2
19.2
8-12
8
10
80
0.8
6.4
12-16
5
14
70
4.8
24.0
16-20
2
18
36
8.8
17.6
 
N = 25
 
Total = 230
 
Total = 96.0

$\text{Mean}=\frac{230}{25}=9.2$

$\text{M.D}=\frac{96}{25}=3.84$

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 "5 Marks Questions" from Statistics→Statistics — all question types→MATHS STD 11 Science question papers→Rajasthan Board STD 11 Science question papers→Rajasthan Board question paper generator→

Similar questions

Differentiate the following from first principle:

$(\text{x}+2)^3$

→
Find the direction in which a straight line must be drawn through the point (-1, 2) so that its point of intersection with the line x + y = 4 may be at a distance of 3 units from this point.
→
Evaluate the following limit:
$\lim\limits_{\text{x}\rightarrow{-1}}\frac{\text{x}^{3}+1}{\text{x}+1}$
→
Differentiate the following from the first principle

$\text{x}\sin\text{x}$

→
Prove that:
$\frac{\sin\text{A}+\sin3\text{A}+\sin5\text{A}}{\cos\text{A}+\cos3\text{A}+\cos5\text{A}}=\tan3\text{A}$
→
Prove that:
$\cos^32\text{x}+3\cos2\text{x}=4(\cos^6\text{x}-\sin^6\text{x})$
→
Find the coordinates of the vertices of a triangle, the equations of whose sides are:
x + y - 4 = 0, 2x - y + 3 = 0 and x - 3y + 2 = 0
→
If then $\text{x}+\tan\Big(\frac{\pi}{3}\Big)+\tan\Big(\text{x}=\frac{2\pi}{3}\Big)=3,$prove that $\frac{3\tan\text{x}-\tan^3\text{x}}{1-3\tan^2\text{x}}=1$
→
Solve the following equations:
$\sin\text{x}+\sin2\text{x}+\sin3=0$
→
Find the linear inequations for which the shaded area in Fig. is the solution set. Draw the diagram of the solution set of the linear inequations:

→