(b) A grocery store collected sales data. It found that a change in price does not imply that people will buy more or less milk. What can we determine from this information? O There is no correlation between price and amount of milk bought. O There is a correlation between price and amount of milk bought. However, there is no causation. This is because there is likely a decrease in the amount of milk bought with an increase in the price. O There is a correlation between price and amount of milk bought. There may or may not be causation. Further studies would have to be done to determine this.

The data provides information on life expectancy and the number of televisions per thousand people in a sample of 22 countries, as reported by the world almanac and book of facts 2006 A. Describe the Direction and strength of the correlation between the two variables B. Because of the association between the variables, someone might mistakenly conclude that simply sending televisions to the countries with the lower life expectancies would cause their inhabitants to live longer. Comment on this argument and the reason televisions are likely associated with longer life expectancies C. In general, if two variables are strongly associated, does it follow there must be a cause and effect relationship between them? Explain

Statistics Question

8.