Question



L is not a wbole mumber, one procedure is to interpolae soth of 23.75, foe example, eads to a valuc that is 3/4 of the way between dhe 23nd and 24th scores. LUse this method of interpolation to find Pys for the set of test scores below 51 54 64 68 72 74 7683 94 94 99 O 94 O 85.75 O 83
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Answer #1

here we have data:

51
54
64
68
72
74
76
83
94
94

99

Correct option "B"

94

Solution: Step 1. Arrange the data in ascending order: 51, 54, 64, 68, 72, 74, 76, 83, 94, 94, 99 Step 2. Compute the position of the pth percentile (index i): i-(p/ 100) n), where p-75 and n 11 i-(75/ 100) 11-8.25 Step 3. The index i is not an integer, round up. (i-9)the 75th percentile is the value in 9th position, or 94 Answer: the 75th percentile is 94

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