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Misspaige4453
19.08.2019 •
Mathematics
Jessie received the following scores on her math test this year. (45,65,70,80,85,100) suppose the teacher removes the lowest and highest scores. (65,70,80,85) what are the interquartile range s of jessie's orginal scores and her new scores a. 55,20 b. 20,15 c. 75,75
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Ответ:
Before grades drop median is 70.5
After grades drop median is 70.5
Then you find upper and lower quartile of the two
Before dropped grades is 65 for lower
Before dropped grades is 85 for upper
After dropped grades is 67.5 for lower
After dropped grades is 82.5 for upper
Then you subtract the two to find the range
85-65= 20
82.5-67.5= 15
So the answer is B
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Ответ: