The following graph is an ogive of a standardized test\'s scores. The vertical a

Question

The following graph is an ogive of a standardized test's scores. The vertical axis in an ogive is the cumulative relative frequency and can also be interpreted as a percentile. Complete parts a through c. (a) Find and interpret the percentile rank of a test score with a value of 120 A test score of 120 corresponds to the 50 th percentile rank since this percentage of test scores are less than or equal to a test score with a value of 120 (b) Find and interpret the percentile rank of a test score with a value of 140 A test score of 140 corresponds to the 90 th percentile rank since this percentage Percentle Ranks of Test Scores of test scores are less than or equal to a test score with a value of 140 (c) What score corresponds to the 10th percentile? The 10th percentile corresponds to a test score of I 40 Enter your answer in the answer box and then click Check Answer All parts showing ype here to search F9 F8 F5 F4

Explanation / Answer

c) If we look on the y-axis and extend a horizontal like corresponding to the 10th percentile, it will cut the plot at a point which when extended in the vertical direction cuts the x axis at X = 100

therefore the 10th percentile score is 100

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