Types of Bar Graph
Various types of bar graph include:
- Vertical Bar Graph
- Horizontal Bar Graph
Vertical Bar Graph
These are the most common bar graph we come across, the bars of grouped data in vertical bar graphs lie vertically. Sometimes when the data categorized have long names, then Horizontal bar graphs are preferred since, in vertical bar graphs, there is not much space on the x-axis.
An example explaining the concept of Bar graph is added below:
Example: There are 800 students in a school and the table for their birthdays in all 12 months is given below, Draw the Vertical Bar graph and answer,
Months | January | February | March | April | May | June | July | August | September | October | November | December |
---|---|---|---|---|---|---|---|---|---|---|---|---|
No. of Students |
50 |
80 |
65 |
50 |
40 |
90 |
45 |
110 |
80 |
70 |
100 |
20 |
- Maximum number of students have their birthdays in which month?
- Which two months have equal number of birthday?
- Minimum number of birthdays occur in which month?
Solution:
The vertical bar graph for the table given in the question will be,
From the Bar graph we can figure out the answer of the questions
- August is that month in which maximum birthdays are happening, since the bar above august is the longest(there are 110 students whose birthday come in August)
- From the graph, we can tell that January and April have equal lengths of bars, That means they have the same number of birthdays (both have 50 birthdays)
- Minimum number of birthdays occur in December since it has the smallest bar.(20 students have their birthdays in December.
Horizontal Bar Graph
The graphs that have their rectangular bars lying horizontally, which means that the frequency of the data lie on the x-axis while the categories of the data lie on the y-axis are known as Horizontal bar graphs.
Horizontal bar graphs are preferred when the name of the categories of data are long and the minimum space on the x-axis is not sufficient.
Example: In an examination, Reeta performed in 5 subjects, her performance is given in the table below. Draw a Horizontal Bar graph showing the marks she obtained in all the subjects, Also, calculate the overall Percentage obtained by her.
Solution:
The Horizontal bar graph for the table mentioned in the question,
The overall Percentage obtained by Reeta = ×100
= 79 percent.
Data Handling
Data Handling: Nowadays, managing and representing data systematically has become very important especially when the data provided is large and complex, This is when Data Handling comes into the picture.
Data handling involves the proper management of research data throughout and beyond the lifespan of a research project. This process includes establishing and implementing policies and procedures for securely storing, archiving, or disposing of data. It encompasses both electronic and non-electronic means of data management to ensure the data’s safety and security at all stages.
Statistics is another term for data handling, and it is useful not only in the fields of Math and Science but also in the fields where the representation of data is required. Let’s learn about some forms of Data handling, including the graphical representation of data and how they work.
Table of Content
- What is Data Handling?
- Data Handling Meaning
- Graphical Representation of Data
- Pictographs
- Drawing a Pictograph
- Bar Graphs
- Types of Bar Graph
- Vertical Bar Graph
- Horizontal Bar Graph
- Double- Bar Graph
- Line Graphs
- How to Make a Line Graph?
- Pie Charts
- Scatter Plot
- Examples on Data Handling
- Data Handling Worksheet