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What is considered measures of variabilty is it mean interquartile range or mean absolute deviation?
interquartile range or mean absolute deviation.
What is the definition of the interquartile in math?
The lower quartile of a data set is the value such that a quarter of the observations are less than or equal to it, and three quarters are larger. The upper quartile is the value such that three quarters of the observations are less than or equal to it, and a quarter are larger. Interquartile refers to between these two numbers.
Is the interquartile range or IQR is found by subtracting the mean from the maximum value of a data set?
No. The IQR is found by finding the lower quartile, then the upper quartile. You then minus the lower quartile value from the upper quartile value (hence "interquartile"). This gives you the IQR.
Does the outlier affect the interquartile?
No. The IQR is a resistant measurement.
What is the semi 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
