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| 2.
| |
This arrangement is called a |
| | A) | Frequency distribution |
| | B) | A frequency polygon |
| | C) | A pie chart |
| | D) | A stem-and-leaf chart |
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| 3.
| |
How many days were studied? |
| | A) | 11 |
| | B) | 30 |
| | C) | 50 |
| | D) | None of the above |
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| 4.
| |
What was the smallest and largest number of sets sold per day? |
| | A) | 1, 8 |
| | B) | 10, 80 |
| | C) | 11,88 |
| | D) | None of the above |
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| 5.
| |
How many days were there less than 30 sets sold? |
| | A) | 15 |
| | B) | 6 |
| | C) | 30 |
| | D) | None of the above |
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| 6.
| |
The actual number of sets sold per day between 60 and 69 is |
| | A) | 65, 66, 67, 68, 68 |
| | B) | 60, 69 |
| | C) | Cannot tell from the information given |
| | D) | None of the above |
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| 7.
| |
The quartile deviation is |
| | A) | The square root of the variance. |
| | B) | Based on the middle 50 percent of the observations. |
| | C) | In squared units of the original data. |
| | D) | Appropriate only for symmetric distributions. |
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| 8.
| |
In a symmetric distribution |
| | A) | The mean, median, and mode are equal. |
| | B) | The mean is the largest measure of location. |
| | C) | The median is the largest measure of location. |
| | D) | The standard deviation is the largest value. |
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| 9.
| |
A coefficient of skewness of -2.73 was computed for a set of data. We conclude that |
| | A) | The mean is larger than the median. |
| | B) | The median is larger than the mean. |
| | C) | The standard deviation is a negative number. |
| | D) | Something is wrong because the coefficient of skewness cannot be less than -1.00. |
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| 10.
| |
A scatter diagram: |
| | A) | Is a graphic tool designed to portray the relationship between variables. |
| | B) | Uses interval or ratio scale data. |
| | C) | Does not allow negative values. |
| | D) | Both A and B are correct. |
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