focus question: what information does the interquartile ... 3.1.… · the range is the difference...
TRANSCRIPT
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3.1- Estimating Cereal Serving Sizes Determining the IQR
FOCUS question: What information does the interquartile range provide about how data vary in a distribution?
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Q1 is the median of the lower quartile; Q3 is the median of the upper quartile.
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C1. Wheaty O's; The IQR is larger.
C2. No it's not. It does tell you how clustered the data are around the median.
C3. A typical serving size for Wheaty O's is between .91 and 1.43. ; The typical serving size for Raisin Flakes is .79 and 1.17.
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D1. W.O. : 2.11 - .71= 1.4
R.F. : 1.33 - .45= 0.88
D2. The range is the difference between the minimum and maximum data values. It is the measure of variability in the whole data set.
D3. The serving size for Wheaty O's varies more than the serving size for Raisin Flakes.
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