true or false

2) Test your ability to make proper interpretations by answering True or False to each of the statements: EXERCISE 1 (Part 2): INTERPRETING PERCENTILES - True / False The following questions will test your understanding of percentiles. Choose either T or F for each item and record your response on the previous page. T F 1, Len is a sixth grader. He obtained a percentile score of 70 in reading on a published standardized test. This means that Len got 70 percent of the items correct. T F 2. Three students have taken the same test. Becca's score places her at the 84" percentile, Sally is at the 98" percentile, and Yvonne is at the 99.9" percentile. It's likely that there is a larger difference in the raw scores of Becca and Sally compared to Sally and Yvonne. T F 3. While Rebecca scored at the 54" percentile on the reading test, Helmut scored only at the 45" percentile. This provides clear and compelling evidence that Rebecca is a better reader than Helmut. T F 4. Bill's score on a reading test is at the 85" percentile. His teacher Mrs. Smith constructs a +/- 10%% confidence interval around his score, placing his reading ability somewhere between the 75" and 95" percentile. Tony's score on the same reading test is at the 30" percentile, putting his reading ability somewhere between the 40 and 60" percentile. This is a reasonable way to approximate a student's reading ability. T F 5. Donny achieved a percentile rank of 95 on a math test at the beginning of the school year and moved up to a percentile of 99 on the test by the end of the school year. Jim's math score on the same test increased from the 50" percentile to the $4" percentile over the same time period. Based on this information, there is good reason to believe that the two students made about equal progress in their math skills over the course of the school year. T F 6. Mrs. Johnson wants to compare Hartford Elementary to other elementary schools. To begin with, she'd like to compare Hartford's second graders' reading scores to other schools' second graders" reading scores. To do this, she obtains the percentile ranks for each second grade Hartford pupil on a national test of reading and averages them. The mean of these percentiles is the percentile rank for her school's second graders on the reading test. T F 7. Mr. Brown learns that Mrs. Johnson wants to compare the performance of Hartford to other schools. He argues that unless the test publisher provides norms for other schools (c.g, means), comparisons of Hartford to other schools cannot be made. T F 8. Susie, a third grade student, achieved a raw score in her reading class that places her in the failing range. She is at the 30" percentile among all students in her class. Based on this information, we can say that Susie should be retained for another year in reading class. Failure to have her repeat reading class may contribute to her having a reading disability in the future. T F 9. Tammy's score on a math test was at the 40" percentile. while Jake achieved the 50 percentile on the same test. Alan's score was at the 80" percentile and Brenda's score was at the 90" percentile on the same math test. The difference in Tammy's and Jake's raw scores and the difference in Alan's and Brenda's raw scores must be about the same. T F 10. Mrs. Henderson is the new principal at Belmont Elementary. She set as her goal getting every pupil up to the 50* percentile in his/her respective class at Belmont within 4 years of her arrival at Belmont Elementary. With diligent effort and full cooperation from the staff and administration, this is a reasonable goal for most modern schools