Quickly calculate the Semi Interquartile Range (SIQR), a key measure of statistical dispersion, with our free online tool. Perfect for understanding data variability, just input your first quartile (Q1) and third quartile (Q3) to get instant results.
Formula:
The formula for the Semi Interquartile Range (SIQR) is a robust measure of statistical dispersion, indicating the spread of the middle 50% of a dataset. It is calculated as:
SIQR = (Q3 - Q1) / 2
Where:
Q1 = The First Quartile (25th percentile of the data)
Q3 = The Third Quartile (75th percentile of the data)