1. Soon everybody will … Dangerous Extrapolations

2. ‘By 1999, everybody will have a video recorder!’ This was a claim made in 1994, when the sales of video recorders from 1987 to 1994 was analysed. Using the graph on the right, would you agree or disagree with this statement? Give your reasons. Source: BBC News Magazine GO FIGURE - Seeing stats in a different way: http://www.bbc.co.uk/news/magazine-12058944

3. By 1999, not everybody had a video recorder! This is what actually happened after a few more years had passed. Can you predict what would have happened after this? Source: BBC News Magazine GO FIGURE - Seeing stats in a different way: http://www.bbc.co.uk/news/magazine-12058944

4. Household ownership of electronic communications devices, USA, 2010 to 2019 This graph, produced in 2013, shows ‘household device ownership’: the percentage of households in the USA owning the different communications devices, based on surveys. Source: http://crresearch.com/2013/01/07/all- cellphones-will-be-smart-and-tablets-will- dominate-personal-computing/http://crresearch.com/2013/01/07/all- cellphones-will-be-smart-and-tablets-will- dominate-personal-computing/

5. Household ownership of electronic communications devices, USA, 2010 to 2019 A researcher created this graph in 2013, using it to predict that by October 2017, every household in the USA will have a tablet device. The researcher plots data above 100%, because he states that the average number of computers in households varies between 1.1 and 1.2.

6. Household ownership of electronic communications devices, USA, 2010 to 2019 Identify at least two possible errors in the researcher’s use of data.