Answer the questions below. Espanol
(a) A phone company determined that an increase in income does not indicate a change in a customer's phone usage. What does the
analysis show?
There is no correlation between income and phone usage.
There is a correlation between income and phone usage. There may or may not be causation. Further studies would have to be done to
determine this.
There is a correlation between income and phone usage. There is probably also causation. This is because there is likely an increase in phone
usage with an increase in income.
(b) A music store conducted a survey. It showed that the number of CDs purchased by a shopper decreases with the number of songs
he downloaded. What can we likely say?
There is no correlation between number of CDs purchased and number of songs downloaded.
There is a correlation between number of CDs purchased and number of songs downloaded. However, there is no causation. This is because
there is a decrease in the number of CDs purchased with an increase in the number of songs downloaded.
There is a correlation between number of CDs purchased and number of songs downloaded. There may or may not be causation. Further
studies would have to be done to determine this.
(C) Rafael compared the statistics from his team's baseball season. He determined that having fewer hits did not imply that a player
caught more or fewer balls. What should he conclude?
There is no correlation between number of hits and number of balls caught.
There is a correlation between number of hits and number of balls caught. There may or may not be causation. Further studies would have to
be done to determine this.
There is a correlation between number of hits and number of balls caught. However, there is no causation. This is because there is probably a
decrease in the number of balls caught with a decrease in the number of hits.
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