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April 23, 2014

Homework Help: MATH 7th GRADE

Posted by MATH HELP PLEASE on Sunday, May 8, 2011 at 3:52pm.

Vicki measured the length of 8 leaves. The lengths were 10 cm, 12 cm, 15 cm, 15 cm, 19 cm, 11 cm, 18 cm, and 15 cm.
What is the interquartile range of Vicki's data? answer choices are:
a. 1
b. 3
c. 5
d. 6
I chose 5 and it says that 6 is the correct answer. Can you please show me why?
I have Q1 = 11.5 and Q3 = 16.5.
Then 16.5 - 11.5 = 5 (So the IQR = 5)

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