Chapter A, Problem 1RQ

Exercise A1

Name three kinds of graphs and briefly state when is most appropriate to use each type of graph.

To determine

To state:

The different types of graphs.

Explanation of Solution

There are three types of graphs that is line graphs, pie graphs, and bar graphs.

A line graph is a graphical diagram which displays the changes in information over time. This is also referred as a line chart. In the line graph, there are points which are connected to information or data and shows continuous change. A line graph is used to compare different information, situations, and events. The lines in the graph can descend line or can ascend line based on data.

A pie graph or pie chart is used to display whole information, data, and statistics in an easy to read manner. A circle represents the whole data or group and it contains the slices of data called pie and the varying size of pie show how much data elements are existing in it. Generally, the pie graph used for classification of whole information into the subparts based on their characteristics.

A bar graph is a chart that uses the height of bars to depicts the comparisons between a set of information or data. These bars can be horizontal or vertical. For example, a comparison of the population between two countries India and China. The horizontal line will show the name of the country and the vertical line will show the size of the population. The bars constructed for these two countries will represent the comparison between these two country’s population.

Economics Concept Introduction

Graphs: The graph is a two-dimensional diagram that shows the mathematical relationship between the variables. It represents the numerical data in visual figure to understand the data easily and quickly.