The following table gives the numbers of Facebook users by region of the world a

Question

The following table gives the numbers of Facebook users by region of the world as of November 2012:

One way to compare the numbers of Facebook users for different regions of the world is to take into account the populations of these regions. The market penetration for a product is the number of users divided by the number of potential users, expressed as a percent. For Facebook, we use the population as the number of potential users. Here are estimates of the populations in 2012 of the same geographic regions of the world.

(a) Compute (±0.01) the market penetration for each region by dividing the number of users from the previous Facebook by the population size.
Multiply these ratios by 100 to make the ratios similar to percents, and make a table of the results. Use the values in this table to answer the remaining parts of this exercise.

(b) Make a stemplot of the distribution of percents of FB users.

(c) The center is about(±1) ? percent.

(d)The values range (±0.01) from ? percent to ? percent.

Calculated % users, I am not sure how to answer b,c, and d

please answer and show all work.

Region Facebook users (in millions) Africa 40 Asia 195 Caribbean 6 Central America 41 Europe 233 Middle East 20 North America 173 Oceania/Australia 14 South America 115

Explanation / Answer

a,

b.

c. the center is about 22.91%

d . The values range from 3.89% to 49.9%

Region % FB Users Africa 3.89 Asia 5.00 Caribbean 15.44 Central America 26.55 Europe 28.5 Middle East 9.39 North America 49.9 Oceania/Australia 38.9 South America 28.6

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