1. Figure 9a shows the world’s top ten coal producing countries in 2015.  Figure 9b shows coal consumption in the top ten coal consuming countries and the rest of the world in 2015. Figure 9c shows a Spearman’s rank calculation used to study whether there is a relationship between production and consumption of coal in the countries shown in Figure 9a.

Figure 9a

The world’s top ten coal producing countries in 2015

Figure 9b

Coal consumption in the top ten coal consuming countries and the

rest of the world in 2015

Figure 9c

The null hypothesis is: ‘There is no relationship between production of coal and consumption of coal.’

Analyse the data shown in Figures 9a, 9b and 9c.

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