A simple random sample of 21 high school students was surveyed, and the number of participant...
A simple random sample of 21 high school students was surveyed, and the number of participant with GPAs in a given range were recorded in the following table. Complete the table. Express all answers as decimals rounded to 3 decimal places (namely, rel. freq. and cum. rel. freq.).
| GPA | Class Midpoint | Frequency | Rel. Freq. | Cumulative Freq. | Cumulative Rel. Freq. |
| 0.0-0.9 | 0.45 | 3 | 0.143 | 3 | 0.143 |
| 1.0-1.9 | 1.45 | 5 | 0.238 | 8 | 0.381 |
| 2.0-2.9 | 2.45 | 7 | 0.333 | 15 | 0.714 |
| 3.0-3.9 | 3.45 | 6 | 0.286 | 21 | 1 |
b) Draw an ogive for the GPAs of the students in the sample using cumulative relative frequency. Label the axes appropriately, including the scale used.
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A simple random sample
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