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What is the difference between the range and the interquartile range?

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2010-09-27 17:16:14
2010-09-27 17:16:14

Range = maximum - minimum

Interquartile range = Value of 75th percentile - value of 25th percentile.

The 75th percentile is the value such that 25% of the observations are bigger and 75% are smaller.

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Related Questions


The interquartile range of a set of data is the difference between the upper quartile and lower quartile.


how do you find the interquartile range of this data


The interquartile range is well known as a measure of statistical dispersion. It is equal to difference between upper and lower quartiles. The quartiles is a type of quantile.




Find the difference between the values for quartile 3 and quartile 1.


what is the interquartile range of 16,17,19,22,23,25,27,36,38,40,40,45,46




It gives you the interquartile range


The Interquartile Range because it affects how much space is left between the median on either side....So there you go! I hope that I helped You... : D


The interquartile range is less likely to be distorted by outliers (extreme values).


The Inter-quartile range is the range of the middle half of the data. It is the difference between the upper and lower quartile.Example: 35,80,100 110,120,120,170,180.The Inter-quartile range would be 145-90 or 55To find the interquartile range, you:1) Arrange the data in numerical order.2) Then find the median of the data sets.3) Find the median of the top half and bottom half. (of the set of numbers)4) The groups you now have are "quartiles"5) Find the interquartile range. (subtract the smaller range from the range)



If presents you with the upper and lower quartile range, although you have to do calculations in order to find the interquartile range, so no, it does not,


The interquartile range is the upper quartile (75th percentile) minus (-) the lower percentile (75th percentile). The interquartile range uses 50% of the data. It is a measure of the "central tendency" just like the standard deviation. A small interquartile range means that most of the values lie close to each other.


Graphing to determine difference between third and first quartile as well as to find the median between the two. Also known as semi-interquartile range.



Both are measures of spread or dispersion.


Some measures:Range,Interquartile range,Interpercentile ranges,Mean absolute deviation,Variance,Standard deviation.Some measures:Range,Interquartile range,Interpercentile ranges,Mean absolute deviation,Variance,Standard deviation.Some measures:Range,Interquartile range,Interpercentile ranges,Mean absolute deviation,Variance,Standard deviation.Some measures:Range,Interquartile range,Interpercentile ranges,Mean absolute deviation,Variance,Standard deviation.


If you are talking about statisitics, in a box and whisker graph it is the interquartile range.


The semi interquartile range is a measure for spread or dispersion. To find it you have to subtract the first quartile from Q3 and divide that by 2, (Q3 - Q1)/2



An interquartile range is a measurement of dispersion about the mean. The lower the IQR, the more the data is bunched up around the mean. It's calculated by subtracting Q1 from Q3.


It is important in any statistic measure



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