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| 1 | |
Which of these is correct? |
| | A) | Alba notes the reading on the odometer as a car is driven for various times. Dependent variable: the time. |
| | B) | Burt notes the height of the first bounce as a basketball is dropped from increasing heights. Dependent variable: the drop height. |
| | C) | Carla notes the amount of electricity used for air conditioning and the maximum outside temperature during the day. Dependent variable: the amount of electricity used. |
| | D) | Damian notes the amount of ice-cream consumed per week by various children, and their ages. Dependent variable: the age of the child. |
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| 2 | |
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Consider the scatter plot shown. As the independent variable increases, the dependent variable appears to |
| | A) | increase. |
| | B) | decrease. |
| | C) | stay the same. |
| | D) | have no relation to the independent variable. |
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| 3 | |
You should discard an outlier |
| | A) | only if you can be sure that it is not representative of the relation between the variables. |
| | B) | if it does not follow the pattern of the rest of the data. |
| | C) | if it is noticeable on a scatter plot. |
| | D) | whenever you find one. |
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| 4 | |
A suitable tool for drawing a scatter plot is |
| | A) | a graphing calculator. |
| | B) | a spreadsheet. |
| | C) | statistical software. |
| | D) | All of these are suitable tools for drawing scatter plots. |
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| 5 | |
The scatter plot shows fuel consumption of trucks of various masses over a closed course of 150 km. Which point appears to be an outlier?
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| | A) | (500, 45) |
| | B) | (2000, 200) |
| | C) | (3500, 305) |
| | D) | (4000, 410) |
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