# Data Science Worksheet

There is one question need with a short rationale.

Life Expectancy and Internet Use
The following plot shows life expectancy at birth versus the % of internet users in 208 countries for
which data was available. Which of the following can you conclude from the plot?
90
80
Life expectancy at birth
70
60
50
0
20
40
60
80
100
% Internet users
O
A. If the number of internet users in a particular country increases, then the life expectancy
in that country will also increase.
O B. People who use the internet more also tend to live longer.
C. Countries with a higher percentage of internet users tend to also have higher life
expectancies.
D. Countries with more internet users tend to be more developed, and therefore have
Rationale*
Choose a game
Below are four versions of the same game. Your friend gets to pick the version of the game and
then you get to choose how many times to flip a coin: 10 times or 100 times. For which of the
following versions of the game should you choose to flip the coin 100 times (assuming you want
to win!)?
O A. If the proportion of heads is larger than 0.60, you win
B. If the proportion of heads is larger than 0.40, you win
O C. If the proportion of heads is smaller than 0.40, you win
O D. If the proportion of heads is smaller than 0.45, you win
Rationale*

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