B Apply

13. Think About a Plan The table shows the relationship between the production and the export of rice in Vietnam from 1985 to 2005.

    Rice Production and Export

    Production (1000 tonnes)	15,875	19,225	24,964	32,554	35,600
    Export (1000 tonnes)	59	1624	1988	3400	5100

    SOURCE: International Rice Research Institute

14. How much rice would you expect Vietnam to export in 2015 if the production that year is 42,250,000 tonnes?
    • How can you use a scatter plot to find a linear model?
    • How can you use your model to make a prediction?

15. Nutrition The table shows the relationship between Calories and fat in various fast-food hamburgers.

    Fast Food Calories

    Restaurant	A	B	C	D	E	F	G	H	I
    Number of Calories	720	530	510	500	305	410	440	320	598
    Grams of fat	46	30	27	26	13	20	25	13	26

    1. Find the line of best fit for the relationship between Calories and fat.
    2. How much fat would you expect a 330-Calorie hamburger to have?
    3. Error Analysis Which estimate is not reasonable: 10 g of fat for a 200-Calorie hamburger or 36 g of fat for a 660-Calorie hamburger? Explain.

Reasoning For a strong correlation, people often assume that change in one quantity causes change in the second quantity. This is not always true. For each situation, predict the type of correlation you might find. Do you think that change in the first quantity causes change in the second quantity? Explain.

15. the number of ice cream cones sold and the temperature
16. the size of a car's engine and the number of passengers it is designed for
17. a person's age and the number of cassette tapes he or she owns
18. Data Analysis The table shows population and licensed driver statistics from a recent year.
    1. Make a scatter plot.
    2. Draw a trend line.
    3. The population of Michigan was approximately 10 million that year. About how many licensed drivers lived in Michigan that year?
    4. Writing Is the correlation between population and number of licensed drivers strong or weak? Explain.

    Licensed Drivers

    State	Population (millions)	Number of Drivers (millions)
    Arkansas	2.8	2.0
    Illinois	12.8	8.1
    Kansas	2.8	2.0
    Massachusetts	6.4	4.7
    Pennsylvania	12.4	8.5
    Texas	23.5	14.9

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