Question 2: Use the following informationto complete Exercises 3 – 5: A political scientist took a poolof the political attitudes of the students in one of his classes.Students were asked to rate, on a scale from 1 to 11, “What is youroverall political attitude?”, where 1 = extremely liberal and 11 =extremely conservative. The following frequency analysis resulted:(1.5 points)
Political Attitude Score | f | rf | cf | crf |
11 | 1 | .015 | 67 | 1.000 |
10 | 3 | .045 | 66 | .985 |
9 | 14 | .209 | 63 | .940 |
8 | 6 | .090 | 49 | .731 |
7 | 2 | .030 | 43 | .642 |
6 | 10 | .149 | 41 | .612 |
5 | 9 | .134 | 31 | .463 |
4 | 3 | .045 | 22 | .328 |
3 | 11 | .164 | 19 | .284 |
2 | 7 | .104 | 8 | .119 |
1 | 1 | .015 | 1 | .015 |
4. Compute the values that define the followingpercentiles:
a. 25th b. 50th c.57th d. 75th
What is the interquartile range of the data in #4?
6. Compute the exact percentile ranks that correspondto the following scores:
a. 3 b.5 c.7 d. 9
