Multiple pie charts can be used to compare different, but connected data areas, quickly and clearly. Divided into slices, the overall size of the pie doesn’t change, meaning it’s not suitable for showing growth or difference in size. Showing the relative proportion of a whole, pie charts give a quick and general impression of data. A statistical tool, it smooths out fluctuations, showing the average value over several months and illustrating the trend. As quantities vary from month to month, it can be difficult to spot the trend, which is why a moving average line is recommended. Trends are easier to show on a graph as the data forms a series of plotted points, with time shown on one axis and quantity on the other, meaning you can see when something goes up, down or stays the same. As with bar charts, it’s important to check the scale of both axes, particularly the vertical, as these can be altered to give a false impression of the data. What Graphs ShowĬomparing the performance of different variables over time, a graph can offer a direct comparison and highlight trends. Graphs and ChartsĪs well as bar charts, graphs and pie charts can be used to present data. The key to effectively persuading with numbers is to select the type of graph that best displays and supports the message you’re presenting. Once you’ve summarised the raw data into statistics, you can present it in graphical form to your audience. The mode reveals the most common value, the median is the middle value and the mean is the total of all values, divided by the number of values. There are three types of statistical average, each of which offers a different message despite using the same data. You could be required to use statistics to present the audience with an idea of the average. Step Two: Divide the increase by the original amount: ![]() To work out the percentages, follow these three simple steps: One of the easiest and most common statistical processes is taking raw data and summarising into totals, creating summary figures.Ĭharts and graphs are often used to show percentages, which are often referred to as proportions. Only when data has been collected, processed and re-presented for a specific purpose does it become a statistic. ![]() The ability to present raw data as statistics, graphs or charts is particularly important during the problem-solving and decision making process. How to select the best visual display method to ensure you communicate your data in the most effective way.The various formats for presenting data and the pros and cons of each.This article explores the different options for displaying data, including bar charts, line graphs, pie charts and pictograms and how to choose the right one to present your data with maximum impact. ![]() A key skill for any employee is the ability to present data and use it to persuade audiences.
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