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| 1 | |
Nadia went on a 9-day school tour of the capitals of Europe. Each day , she bought a litre of orange juice, and kept track of the price in Eurocents, as shown in the stem-and-leaf plot. What was the mean price?
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| | A) | 74 |
| | B) | 75 |
| | C) | 77 |
| | D) | 84 |
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| 2 | |
What is the median price for the orange juice in question 1? |
| | A) | 74 |
| | B) | 75 |
| | C) | 77 |
| | D) | 84 |
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| 3 | |
What is the mode for the orange juice prices in question 1? |
| | A) | 74 |
| | B) | 75 |
| | C) | 77 |
| | D) | There is no mode. |
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| 4 | |
Billy's Bike Barn's sales records for hybrid bicycles over several years is shown. Estimate the sales in 2003.
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| | A) | $350 |
| | B) | $3100 |
| | C) | $3500 |
| | D) | $3800 |
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| 5 | |
Predict the sales for 2006, using the graph in question 4. |
| | A) | $3500 |
| | B) | $3900 |
| | C) | $4000 |
| | D) | $4500 |
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| 6 | |
Metric hat sizes range from 48 to 64. Calhoun the Hatter keeps records of the different sizes sold in his shop. The most useful measure for this situation is |
| | A) | the median |
| | B) | the mode |
| | C) | the mean |
| | D) | the largest size |
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| 7 | |
Anna runs the school cafeteria, and knows that about 30% of the students buy food there regularly. She would like to change the menu to attract a larger percent of the students. Which survey method would give unbiased data? |
| | A) | Survey every 5th student who comes to the cafeteria. |
| | B) | Survey every student who comes to the cafeteria. |
| | C) | Survey only students who never come to the cafeteria. |
| | D) | Survey a random sample of students picked from the entire student body. |
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| 8 | |
A publishing company carries two lines of books, whose sales records are shown. The company intends to downsize by eliminating one line. They should eliminate cookbooks if they base their decision on
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| | A) | the trend |
| | B) | the median |
| | C) | the mean |
| | D) | the mode |
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| 9 | |
The company in question 8 should eliminate how-to books if they base their decision on |
| | A) | the trend |
| | B) | the median |
| | C) | the mean |
| | D) | the mode |
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| 10 | |
Jerry believes that high school students have too much homework compared with elementary students. He submitted the graph to the student newspaper. How can the bias in the graph be removed?
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| | A) | Remove the leading title. |
| | B) | Start the vertical axis at 0, not 20. |
| | C) | Remove the arrow and message. |
| | D) | All of these. |
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