Uncover the spread of the middle 50% of your data with our free InterQuartile Range (IQR) Calculator. Simply input your data set, separated by commas, and instantly get the first quartile (Q1), third quartile (Q3), and the IQR. This powerful tool is ideal for students, statisticians, and data analysts needing quick and accurate data variability insights.
Formula:
The InterQuartile Range (IQR) is a measure of statistical dispersion, representing the difference between the third quartile (Q3) and the first quartile (Q1). It indicates the spread of the middle 50% of a data set, making it less susceptible to outliers than the full range.
IQR = Q3 - Q1
Where:
Q1: The first quartile (25th percentile of the data)
Q3: The third quartile (75th percentile of the data)