Estimating from scatter graphs

12 questions

1. Correlation describes the extent to which a relationship between two variables is close to a ___ relationship.
2. Select the scatter graph which does not show an association between the two variables.
3. Which of these scatter graphs shows a negative correlation?
4. This scatter graph shows the value of a car and its age. The scatter graph shows ___ correlation.
5. Lucas says, ‘A positive correlation means that one variable causes the increase in the other variable.” Is Lucas correct?
6. This scatter graph shows data taken from an gas supplier about energy bills and outside daily temperatures. Select the correct statement.
7. A line of ___ is a line where the distance between each data point and the line is minimised.
8. Andeep says the line of best fit must always go through the origin. Is Andeep correct?
9. Which of these graphs has an appropriate line of best fit?
10. The scatter graph shows data taken from the ONS, where each point represents a region in the UK. Use the line of best fit to estimate the population of a region with emissions of 1000 kt CO2.
11. The scatter graph shows data taken from the ONS about regions in the UK. An estimate for the median income in a region where the median house price is £300 000 is £___ to the nearest thousand.
12. The scatter graph shows data taken from the ONS about regions in the UK. The population of a region is predicted to double from 200 000 to 400 000, estimate how many more cell towers the region needs.

License: OGL