Arable land is land that is used for growing crops. The amount of arable land can indicate how able a country is to produce food to support its citizens countries with the highest percentage of arable land (as a percentage of total land area) are listed in the table below.

Higher-income countries		Lower-income countries
Denmark	58%	Bangladesh	59%
Hungary	49%	Ukraine	56%
Czech Republic	41%	Moldova	55%
Isle of Man	39%	India	53%
Lithuania	38%	Togo	49%
Poland	36%	Burundi	47%
Germany	34%	Rwanda	47%
France	34%	The Gambia	44%

Is knowing the percentage of land that is arable sufficient information to determine a country's ability to grow its own crops? Explain.If not, what other factors would be important to research?

The number of people per public wi-fi hotspot, in those countries where hotspots are available, is summarised below.These represent the highest values among high-income countries.

Find the range, quartiles and interquartile range of this data set. Round to the nearest tenth where necessary.

The number of people per public wi-fi hotspot, in those countries where hotspots are available, is summarised below.These represent the highest values among high-income countries.

Are there any outliers in this data set? Explain.

The number of people per public wi-fi hotspot, in those countries where hotspots are available, is summarised below.These represent the highest values among high-income countries.

Find the range, quartiles and interquartile range of the data set with any outliers removed.

The number of people per public wi-fi hotspot, in those countries where hotspots are available, is summarised below.These represent the highest values among high-income countries.

Which is most affected by the presence of outliers,  the range or the interquartile range?Explain.

Create a set of data with an odd number of values(at least seven) where the three quartiles are all whole numbers.

Find the range, the three quartiles and the interquartile range for data represented by the following box-and-whisker plots.