Exploring data: Graphs and numerical summaries
Exploring data: Graphs and numerical summaries

This free course is available to start right now. Review the full course description and key learning outcomes and create an account and enrol if you want a free statement of participation.

Free course

Exploring data: Graphs and numerical summaries

1.2: Nuclear power stations

The first data set is a very simple one. Table 1 shows the number of nuclear power stations in various countries throughout the world before the end of the cold war (that is, prior to 1989). The names of the countries listed are those that pertained at the time the data were collected.

Table 1 Nuclear power stations

Country Number
Canada 22
Czechoslovakia 13
East Germany 10
France 52
Japan 43
South Korea 9
Soviet Union 73
Spain 10
Sweden 12
UK 41
USA 119
West Germany 23

You could scarcely have a more straightforward table than this, and yet it is by no means clear what is the most meaningful and appealing way to show the information.

M248_1

Take your learning further

Making the decision to study can be a big step, which is why you'll want a trusted University. The Open University has over 40 years’ experience delivering flexible learning and 170,000 students are studying with us right now. Take a look at all Open University courses.

If you are new to university level study, find out more about the types of qualifications we offer, including our entry level Access courses and Certificates.

Not ready for University study then browse over 900 free courses on OpenLearn and sign up to our newsletter to hear about new free courses as they are released.

Every year, thousands of students decide to study with The Open University. With over 120 qualifications, we’ve got the right course for you.

Request an Open University prospectus