Histogram

Q.

For the given data set, you wish to make a histogram. What will be the width of each bar, given that 1kg is 2 units in the x axis?

$$\begin{array}{cc}\text{Weights(Kg)}& \text{No. of persons}\\ 40-45& 4\\ 45-50& 12\\ 50-55& 13\\ 55-60& 6\\ 60-65& 5\end{array}$$

1. 15

2. 5

3. 10

4. 20

Q.

If we draw a histogram for the class interval 15 - 30, what will be the value of 'a' ?

1. 7

2. 3

3. 11

4. 4

Q.
The number of people of Math City and their age group is recorded. The data is shown in the histogram below:
Which age group of people of Math City is least in number?

1. $5-10$
2. $10-15$
3. $15-20$

Q. Which of the following is the correct histogram for the grouped frequency table given below:

1. 
2. 
3. None of the above

Q. Which type(s) of graph can be plotted using the following data set of number of flights arrival per minute in different hours of the day in an airport? Time (hours) Arrivals per minute

$0600-0700$	$4$
$0700-0800$	$2$
$0800-0900$	$4$
$0900-1000$	$3$
$1000-1100$	$5$
$1100-1200$	$1$

1. Bar graph
2. Histogram
3. Line graph
4. None of the above.

Q. In the given below graphical representation
students ate most candy.

Q. The graphical representation of the number of pieces of candy consumed by students in a week is given below:
students ate less than $10$ pieces of candy per week.

Q. 500 students appeared in an exam. The exam comprises three subjects: English, science, and mathematics.
The Venn diagram below represents the number of students who passed the exam.Find the number of students who failed in science or mathematics.

1. 95
2. 105
3. 120
4. 110

Q. Which of the following is correct histogram for the data given below:

1. 
2. 
3. None of the above

Q. The relation between the working time(t) and the income (c in dollars) of a person is given in the graph. The function that relates these is

1. t = 5 $\times$ c
2. c = 5 $\times$ t
3. t = 20 $\times$ c

Q. The following graph shows the number of boys of a class in different age groups:

Is it possible to find the total number of boys in the age group 0 - 10 years?Answer in Yes/No.

Q. Does a histogram give us precise data points? Answer in Yes/No.

Q. The following bar graph shows the number of persons killed in industrial accidents in a country for some years (Fig.23.23)


Read the bar graph and choose the correct alternative in each of the following:

(i) The year which shows the maximum percentage increase in the number of persons killed in coal mines over the precending year is:
(a) 1996
(b) 1997
(c) 1999
(d) 2000

(ii) The year which shows the maximum decrease in the number of persons killed in industrial accidents over the precending year is:
(a) 1996
(b) 1997
(c) 1998
(d) 1999

(iii) The year in which the maximum number of persons were killed in industrial accidents other than those killed in coal mines is
(a) 1995
(b) 1997
(c) 1998
(d) 1999

Q. In elements on horizontal axis are grouped and they are considered as ranges while in elements are taken as individual entity.

1. Histogram
2. Bar Graph
3. Pie Chart
4. Bar and Histogram

Q. Heights of 30 people of a village are represented in a histogram given below.
How many people are having height between 149.5 cm and 169.5 cm?

1. 8
2. 6
3. 16
4. 16