Using the information given in the adjoining histogram, calculate… - Vidyadip

Question

Using the information given in the adjoining histogram, calculate the mean.

✓

Answer

C.I	Frequency	Mid value x	Fx
15-25	10-Jan	20	200
25-35	20	30	600
35-45	25	40	1000
45-55	15	50	750
55-65	5	60	300
Total	75		2850

$\bar{x}=\frac{\sum f_x}{\sum f}=\frac{2850}{75}=38$

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 "[3 marks sum]" from Measure of Central Tendency (Mean, Median, Quartiles and Mode)→Measure of Central Tendency (Mean, Median, Quartiles and Mode) — all question types→Mathematics STD 10 question papers→ICSE Board STD 10 question papers→ICSE Board question paper generator→

Similar questions

If $\left[\begin{array}{cc}1 & 4 \\ -2 & 3\end{array}\right]+2 M=3\left[\begin{array}{cc}3 & 2 \\ 0 & -3\end{array}\right]$, find the matrix $M$.

A point P (a, b) is reflected in the x-axis to P’ (2, -3). Write down the values of a and b. P” is the image of P, reflected in the y-axis. Write down the co-ordinates of P”. Find the co-ordinates of P”’, when P is reflected in the line, parallel to y-axis, such that x = 4.

Solve the following quadratic equation using formula method only
$5x^2 - 19x + 17 = 0$

Anu has 750 shares of Rs 60 each of 'Tata Infotech' paying 15% dividend. Find her net income after paying 6% income tax.

In triangle ABC, AB = 12 cm, LB = 58°, the perpendicular from A to BC meets it at D. The bisector of angle ABC meets AD at E. Calculate:
(i) The length of BD;
(ii) The length of ED.
Give your answers correct to one decimal place.

Which term of the A.P. 3, 10, 17,… will be 84 more than its 13th term?

The figure given alongside shows two straight lines $AB$ and $CD$ intersecting each other at point $P (3, 4).$ Find the equations of $AB$ and $CD.$

The total area of a solid metallic sphere is $1256 \ cm^2.$ It is melted and recast into solid right circular cones of radius $2.5 \ cm$ and height $8 \ cm.$ Calculate: the number of cones recasted $[\pi = 3.14]$

If the third and the $9^{th}$ term of an A.P. be $4$ and $-8$ respectively, find which term is zero?

Show that the points $P (a, b + c), Q (b, c + a)$ and $R (c, a + b)$ are collinear.