Charts are frequently used to help people understand **enormous amounts** of data and the relationships between different portions of the data. Charts are frequently easier to interpret than raw data. They are used in a broad range of areas and can be drawn by hand (typically on graph paper) or on a computer using a charting program.

The two main types of charts are bar charts and line charts. A bar chart shows the individual items that make up a group or series with each bar representing **one item**. Line charts show **a single item** changing over time. Bar charts are more common than line charts because they do not require you to know how much change has occurred between points on the chart. Line charts need at least three points to calculate **change rates** like percentages or ratios. Bar charts are easier to read than line charts because there is no need to estimate how much change has occurred between points.

A pie chart is a type of chart that displays specific information as a proportion of a whole. The term "pie" comes from the impression that each slice of the pie represents an equal part of the whole. Although this is often the case, it is not necessarily so - for example, if there are seven people in a group, then a pie chart could display three of those people's interests simultaneously, since each interest accounts for 14.3% of the whole.

Doughnut charts are used to compare several categories within a given dataset.

In a spreadsheet, a chart is a graphical depiction of data. It contributes to a better comprehension of enormous amounts of data. Charts make it easy to make comparisons and understand growth and correlations between **data values** and trends. Responded to a question on what kind of chart they would like to see, most students said pie charts and scatter plots.

The schedule for class 9 is as follows: August 2, August 16, August 23, September 6, September 20, October 4, October 18, November 1, November 15, December 5, December 19.

A chart, in general, is a graphical representation of data. Charts enable users to visualize **data outcomes** in order to better understand and anticipate current and future data. The term "chart" comes from early mechanical devices that produced **graphic representations** of information; they were originally called "caricatures". In mathematics, a caricature is a diagram or sketch that makes a simple but accurate representation of **some object** or structure.

Charts are commonly used by statisticians and researchers to describe and analyze patterns in data. They are also useful for presenting information in a clear and concise manner. Statistics can be used to determine the significance of trends identified in charts. For example, statistics can help scientists determine whether there is a difference between the sexes in terms of body mass index (BMI).

Data often need to be summarized before it is possible to draw any conclusions. For example, if a survey question asked respondents to estimate how many people work at McDonald's, some might say 100 and others might say 10,000. A statistician would summarize **these two answers** by calculating their mean (50) and conclude that there are actually about 50 working men and women at each McDonald's location around the world.

Charts are very effective tools for presenting data. However, they should not be viewed as substitutes for statistical analysis.

A chart's primary roles are to present facts and to encourage deeper investigation of a topic. When a basic table cannot sufficiently depict **crucial relationships** or patterns between data points, a chart is utilized. For example, a bar chart would be inappropriate for comparing **sales figures** across multiple regions because the scale is linear (i.e., increases in one category necessarily decrease in another), while a pie chart would be inadequate because it does not allow for quantification of data.

Charts can be used to show data that cannot be effectively presented through tables alone. For example, a chart could be used to illustrate that countries with larger populations have higher average temperatures than those with smaller populations. Or, a chart could be used to show that there is no correlation between heart disease rates and temperature in different cities around the world.

Tables and charts are both effective tools for presenting data. However, they serve different purposes. Charts are generally more appealing than tables, so they are useful for drawing attention to important details that might otherwise go unnoticed. Tables are usually clearer than charts when many elements must be displayed at once, so they are preferable when you want to show several relationships between variables at once.

There are many types of charts including **line charts**, bar charts, pie charts, and scatter plots.

A chart is a feature in Excel that allows you to visually explain data. Charts help your audience understand the meaning behind the data, and they make it much easier to display comparisons and patterns. In **this session**, you'll learn how to insert charts and edit them so that they effectively communicate information.

Graphs and charts are visual representations of **data relationships** that are meant to make the data easier to grasp and recall. Graphs and charts are frequently used to depict trends, patterns, and connections between collections of data. The aim is to provide **a concise representation** of **a large amount** of information in a way that is easy to interpret.

The two main types of graphs are bar graphs and line graphs. A bar graph shows the value of one variable against another by arranging bars of different lengths. Bar graphs are useful when you want to compare several things at once. They can also be used to show the percentage contribution of each category to the total. Line graphs display two variables on the same scale as lines (or curves). They can be used to show how one thing changes over time, or if one variable affects another. Line graphs are often used to show economic growth because they can visualize how income has changed over time while keeping the proportion between each year's figures unchanged.

Other types of graphs include pie charts, heat maps, scatter plots, network diagrams, and timeline charts. Pie charts are divided into slices that represent certain categories. Each piece of the pie is proportional to its weight in order to illustrate the distribution of values within the whole group.