Exploring Graphs: An Introduction to Data Visualization
This chapter delves into various types of graphs used in data representation, such as bar graphs, pie graphs, histograms, line graphs, and linear graphs. It explains the purpose and structure of each graph type, along with practical examples. Additionally, it covers the Cartesian system for locating points on a graph using coordinates.
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Presentation Transcript
Chapter 15 INTRODUCTION TO GRAPHS
The chapter focuses on topics like 1.A Bar graph 2.A Pie graph 3.A histogram 4. A line graph 5.Linear graph 6.Locate a point
Bar graph A bar graph is used to show a comparison among categories. It may contain parallel vertical or horizontal bars or rectangles.
Pie graph A pie graph is used to compare parts of a whole. It is also referred to as circle graphs.
Histogram A histogram is a bar graph that shows data in intervals. It consists of adjacent bars over the intervals.
Line graph A line graph displays data that change continuously over periods of times
LINEAR GRAPH A line graph which is a whole unbroken line is called a linear graph.
CARTESIAN SYSTEM The system of fixing a point with the help of two measurements, vertical and horizontal is known as Cartesian system
Important points (1) The horizontal axis is called X-axis (2) The vertical axis is called the Y-axis (3) O is the origin (4) Any point is depicted by distance from both the axis (5) The horizontal distance is called the x-coordinate (6) The vertical distance is called the y -coordinate
