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Tables, charts and graphs are all ways of representing data, and they can be used for two broad purposes. The first is to support the collection, organisation and analysis of data as part of the process of a scientific study.

Chart selection tipsIf you have nominal data, use bar charts or histograms if your data is discrete, or line/ area charts if it is continuous. If you want to show the relationship between values in your dataset, use a scatter plot, bubble chart, or line charts.

Bar charts are good for comparisons, while line charts work better for trends. Scatter plot charts are good for relationships and distributions, but pie charts should be used only for simple compositions never for comparisons or distributions.

Use a line chart or an area chart to show changes that are continuous over time. Line charts are the most effective chart for displaying time-series data.

Types of chartsExcel has a variety of chart types, each with its own advantages.Column charts use vertical bars to represent data.Line charts are ideal for showing trends.Pie charts make it easy to compare proportions.Bar charts work just like column charts, but they use horizontal instead of vertical bars.More items...

Data Representation refers to the form in which data is stored, processed, and transmitted. 2022 Devices such as smartphones, iPods, and computers store data in digital formats that can be handled by electronic circuitry.

Excel Column Charts. One of the most common charts used in presentations, column charts are used to compare values to one another. Usually, these are values that have been categorized in some way. The most common subset of column charts is one set of data broken up into categories.