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What Is A Interquartile Range In Math. The Interquartile range or IQR is defined as the. The IQR is often used to identify outliers in the following way. The interquartile range is Q3 minus Q1 so IQR 65 - 35 3. The interquartile range is a measure of variability based on splitting data into quartiles.
For example consider the following numbers. The difference between the upper and lower quartile is known as the interquartile range. Quartile divides the range of data into four equal parts. The smallest of all the measures of dispersion in statistics is called the Interquartile Range. Q1 is the value below which 25 percent of the distribution lies while Q3 is the value below which 75 percent of the distribution lies. Interquartile range IQR a measure of spread equal to the upper quartile Q3 minus the lower quartile Q1 in a data set.
The IQR describes the middle 50 of values when ordered from lowest to highest.
Inter-quartile Range IQR. The values that split each part are known as the first second and third quartile. The Interquartile Range IQR formula is a measure of the middle 50 of a data set. The difference between the upper and lower quartile is known as the interquartile range. Q1 is the middle value in the first half of the data set. The values that divide each part are called the first second and third quartiles.