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...statistics and answering questions associated with charts, graphs and tables. The basics are covered in our other course, Working with charts, graphs and tables, but it is not essential to have read it before you start this course. On any one day, if you look at a selection of newspaper or magazine articles, you will find that a number of them include a chart, graph or...

...statistics of a set of data. Boxplots are particularly useful for assessing quickly the location, dispersion, and symmetry or skewness of a set of data, and for making comparisons of these features in two or more data sets. Boxplots can also be useful for drawing attention to possible outliers in a data set. The other topic, which is covered in Sections 2 and 3, is that...

...statistics. These use two categories of energy: Primary energy − this is essentially energy in its ‘raw’ form. Examples include crude oil before it is refined and the fuels used to generate electricity, such as natural gas and nuclear heat. Delivered (or final) energy − this is the energy that the consumer actually receives (and pays for): refined petrol and...

...statistical uncertainty, the projection was of an “almost certain” overall majority for the Conservatives. The probability of a hung parliament was put at just 3%. All misses – though that doesn’t necessarily reflect on the model, which after all can only be as good as the polls fed into it. Many others were wrong, too. The 2017 General Election Combined Forecast,...