Select the statement that is true: The interquartile range (IQR) is the average value of a data set.
1) The interquartile range (IQR) is the range between the first quartile and the third quartile.
2) The interquartile range (IQR) is the difference between the maximum and minimum values in a data set.
3) The interquartile range (IQR) is the median of a data set.
4) The interquartile range (IQR) is the average value of a data set.
