Subtract the smaller median (30) from the larger (55). The result, 25, is the average improvement in test scores from the pretest score to the posttest score.
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<span>The first group is 5 - 9, the second group is 10 - 14 and the third group is 15 - 19. We now find the number of data within the interval 15 - 19. In the given frequency distribution, 17, 15, 18, 19, 19 and 16 are within the interval 15 - 19. Therefore, the frequency of the third group is 6.</span>
1. Inches.
2. Car sizes vary from 15 ft, to 20 ft, and even to 13 ft. It all depends on the size the manufacturer wanted it to be. But if you are asking what is the best way to measure a car, it would be yards. Or meters, but a yard is slightly bigger.
3. 7 1/2 hours.
4. A parallelogram , a quadrilateral, a square, and a rectangle.
5. 180°.
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