Quiz week 7 Which scale of measurement is being used when comparing achievement test scores of different school systems? Group of answer choices Interval Which scale of measurement would you use if measuring height and weight differences among ethnic groups? Group of answer choices Ratio Jill Jacobs receives a grade equivalent score of 10.6 on a national reading test. She is in the ninth grade. Which statement is most true about Jill? Group of answer choices Jill is doing better than the average student in her grade level. If an individual's percentile rank is 84, he or she got 84 percent of the items correct. Group of answer choices False On normally distributed curves, which of the following is NOT true? Group of answer choices The mean of the standard deviation is 0. Which statement is usually NOT true about all norm-referenced standardized achievement tests? Group of answer choices The standard deviations are always the same, regardless of test publishing company. On a normally distributed curve, raw scores may become meaningful if you know the standard deviation and mean of the group. Group of answer choices True Age comparisons allow a person to compare his or her score at a specific age to the mean and standard deviation of individuals in his or her age peer group. Group of answer choices True