The Interquartile Range (IQR), a fundamental measure in Descriptive Statistics, is best described as:  A. The difference between the highest and lowest values in a dataset.  B. The variance between the mean and the median of a dataset.  C. The gap between the upper (Q3) and lower quartile (Q1) of a dataset.  D. The summation of the dataset's upper (Q3) and lower quartile (Q1).

The interquartile range (IQR) is defined to be the difference between the two quartile values.TrueFalse

The interquartile range IQR is a useful measure of data spread utilizing relative position. Recall that the IQR is the difference between the third and first quartiles.IQR = Q3 − Q1We previously found Q1 = 6 from Q3 = 9.5. Use these values to calculate the IQR.IQR  =  Q3 − Q1 =  − 6 =

In a box plot, what does the interquartile range (IQR) represent?Question 5Answera.Range of the middle 50% of the datab.Sum of the first and third quartilesc.Difference between the maximum and minimum valuesd.Average of all data points

Which statement about the interquartile range is correct?Select one:a.Like the mean, the IQR is influenced by extreme values. So, it is not a useful measure of central tendency polygonb.Like the median, the IQR is not influenced by extreme values. So, it is another useful measure of central tendencyc.Like the mean, the IQR is not influenced by extreme values. So, it is another useful measure of central tendencyd.Like the median, the IQR is influenced by extreme values. So, it is not a useful measure of central tendency polygon

Suppose, we have 9 observations such that 37, 34, 24, 41, 113, 99, 119, 107, 114. Calculate the Inter Quartile Range (IQR) of the data.