Represent Data on a Bar Graph
We will learn how to represent data on a bar graph. A bar graph is a simple way of presenting data. Bar graph is a method of presenting data by drawing rectangular bars of equal width and with equal space between the two bars. Bar graphs can be drawn using horizontal or vertical bars.
A bar graph must be drawn on a graph sheet. A bar graph must have a tittle written above the bar graph.
The information in a bar graph is represented along the horizontal and vertical axis. the horizontal axis generally represents the periods or intervals and vertical axis represents the quantity.
Each axis has a label. The label depicts the information represented on each axis. The bars can be shaded or colored suitably. A convenient scale is chosen to decided about the width of bars, and marking the numbers or values on the vertical axis.
We have seen how pictograph represents a pattern of information through numerical data in general. But such representation takes much time and sometimes, drawing picture symbols make it more difficult. So, instead of using picture symbols, it is easier to use bars with equal width (rectangles) to represent the number of buses.
Look at the following bar graph representation.
Such a representation of data with the help of bars is called a bar graph. The bars can be shaded or coloured.
Types of bar graphs
There are two types of bar graphs:
(i) Horizontal bar graph (ii)
Vertical bar graph
Horizontal Bar Graph
Let us consider an example:
Draw a horizontal bar graph based on the following data.
Solution:
The bar graph gives us the following information.
(i) The number of students passed in different subjects.
(ii) The maximum number of students passed in Music.
(iii) The minimum number of students passed in English and
Maths.
(iv) The student performed best in Music and worst in
English and Maths.
Vertical Bar Graph
Let us take some examples.
1. Draw a vertical bar graph based on the following data.
Solution:
The graph gives us the following information.
(i) The number of different brand of T. V. Sets manufactured
on a certain day.
(ii) The production of Sony TV sets was maximum on that day.
(iii) The production of Prince TV sets was minimum on that
day.
We can say that a bar graph is a pictorial representation of
the numerical data by a number of bars (rectangles) having the same width drawn
horizontally or vertically with equal space between them.
2. Look at the bar graph given below. What information does the bar graph depicts?
The bar graph depicts here the number of saplings planted by students of classes from 1 to 5. The title of the bargraph of saplings planted. The scale used here is 1 square = 10 saplings.
Now, observe the above bar graph and answer the questions that follow.
(i) How many saplings were planted in all?
50 + 60 + 40 + 90 + 50 = 290
(ii) Write the scale of the above bar graph.
1 square = 10 saplings
(iii) Which two classes planted the same number of saplings?
Class I and Class V
(iv) Given 2 reasons why we should grow plants ____________________
You might like these
In pictographs we learnt to recognize different things in our surroundings and to express the given information through pictorial symbols of different objects.
Concept of pattern will help us to learn the basic number patterns and table patterns. Animals such as all cows, all lions, all dogs and all other animals have dissimilar features. All mangoes have similar features and shapes. Leaves of the same tree have similar pattern of
We have learnt, that a collection of objects can be stored out based on their color, shape, size or any other common thing among them. We can organise all the information in a table to understand how many of each item is there in a collection. Information collected is called
Some sample examples of pictographs or pictorial representation are shown, how the objects are used to give information regarding mathematical data. Read the pictograph and gather the information
We will discuss here how to use Tally marks. To count the number of times a value of the variable appears in a collection of data, we use tally mark ( / ). Thus tally mark represents frequency. Observe the tally marks and the corresponding frequencies:
In math practice worksheet on data handling we will solve numerous types of questions on handling data, frequency distribution and on grouping data. Questions on frequency distribution
In worksheet on pictographs, all grade students can practice the questions on data handling. We can present the given information in many ways. In pictograph the information is presented by using a picture as symbol. A pictograph has a title and a key.
We learn how to represent the data on the bar graph. Data can be represented by bars (like rectangle) whose lengths represent numerical values. One can use horizontal or vertical bars. Instead of rectangles one way even use line segments in such graphs.
In worksheet on bar graph we will practice different questions on representing the bar graph from the following data given in the questions. 1. The number of bed-sheets manufactured by a factory during five consecutive weeks is given below.
Now we will discuss about the construction of bar graphs or column graph. In brief let us recall about, what is bar graph? Bar graph is the simplest way to represent a data. In consists of rectangular bars of equal width. The space between the two consecutive bars must be
In math worksheet on bar graphs students can practice the questions on how to make and read bar graphs or column graphs. Test your knowledge by practicing this graphing worksheet where we will
In 5th grade data handling worksheet, students can practice the questions on bar graph, line graph and pie chart. We represent the data in many ways. A graph is a pictorial representation of information. In pictograph the information is presented by using a picture as symbol
The pie chart is a pictorial representation of data relative to a whole. Each portion in the circle represent an element of the collected data. The pie chart represents the composition of various elements in a whole. The total value of the pie chart is always 100%.
Bar graphs are used to compare changes between different groups. Line graphs are used to compare two variables. The data which changes over a period of time can be displayed through a line graph. In line graph: ● Points are plotted on the graph related to two variables
Double bar Graph helps us to compare two data groups. For example the graph given below compares the number of boys and girls in classes I – V. Solve examples on Double bar Graph Observe the graph and answer the questions given below. Answer the given questions
4th Grade Math Activities
From Represent Data on a Bar Graph to HOME PAGE
Didn't find what you were looking for? Or want to know more information
about Math Only Math.
Use this Google Search to find what you need.
Share this page:
What’s this?
|
|
New! Comments
Have your say about what you just read! Leave me a comment in the box below. Ask a Question or Answer a Question.