(3) please show work The following graph is an ogive of a in an ogive is the cum
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Question
(3) please show work The following graph is an ogive of a in an ogive is the cumulative relative frequency and can also be interpreted as a percentile. Complete parts a through c. of a test score with a value of 120. A test score of 120 corresponds to theth percentle rank since this percentage of test scores are of 120. latest score with a value Percentle Ranks of Test Scores (b) Find and interpret the percentle rank of a test score with a value of 130 80 A test score of 130 corresponds to the th percentle rank since this percentage of test scores are of 130 (c) What score corresponds to the 20th percentile? 860 V a test score with a value 40- The 20th percentile corresponds to a test score of 70 90 110 130 150 1 Test Score Enter your answer in each of the answer boxes.Explanation / Answer
(a) The vertical line corresponding to test score 120 cut the curve at corresponding to 50th percentile line. It means 50% of students has test score less than equal to 120. So first blank is 50 and second is "less than or equal to" .
(b) The vertical line corresponding to test score 130 cut the curve at corresponding to 80th percentile line. It means 80% of students has test score less than equal to 130. So first blank is 80 and second is "less than or equal to" .
(c) The horizontal line corresponding to 20th percentile cut the curve at corresponding to 110 test score. So 20th percentile corresponds to a test score of 110.
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