A report of the Kaiser Foundation in the New York Times shows the presence of different types of media in the bedrooms of children living at home.

(a) Explain why it would not be appropriate to form a pie chart using the values in any row of this table. Would it be appropriate to use a pie chart to summarize the percentages within a column?
(b) Prepare a chart that compares the types of media available to children from 5 to 7 years old to those available to adolescents from 14 to 18 years old. What seems to be a key point made by the chart?
(c) For a company that makes video game consoles, what age range do these data suggest marketing should target for new sales?

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Age (years) 2-4 5-7 8-13 14-18 Medium TV Radio Video game 718 47 42 Cable TV 10 1828 32 Computer 26 39 65 65 14 18 34 38 4 9 23 19