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Mathematics 19 Online
OpenStudy (anonymous):

What is the interquartile range of the following data set? 9, 30, 2, 48, 42, 18, 81, 5, 55, 73, 11 A. 64 B. 48 C. 46 D. 55

OpenStudy (anonymous):

@563blackghost

OpenStudy (anonymous):

hello

563blackghost (563blackghost):

one sec...

OpenStudy (anonymous):

ok

563blackghost (563blackghost):

Lets first organize the numbers in order... can you do that?

OpenStudy (anonymous):

2.5.9.11.18.30.42.48.55.81

OpenStudy (anonymous):

2.5.9.11.18.30.42.48.55.73.81*

563blackghost (563blackghost):

Correct so we find the median of these numbers which would be?

OpenStudy (anonymous):

42?

563blackghost (563blackghost):

|dw:1456261653188:dw|So our median is \(\huge{30}\) now we need to find the interquartile range.

OpenStudy (anonymous):

oh ):

563blackghost (563blackghost):

Now the interquartile range is the subtraction of the median of the 1st half and the second half so.... |dw:1456261891293:dw|

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