Discover the boundaries for identifying potential outliers in your dataset with our free Lower and Upper Fence Calculator. Quickly compute the lower fence (Q1 - 1.5 × IQR) and upper fence (Q3 + 1.5 × IQR) using your first and third quartiles to enhance data analysis and ensure data quality.
Formula:
The formulas for the Lower and Upper Fences are:
IQR (Interquartile Range) = Q3 - Q1
Lower Fence = Q1 - 1.5 × IQR
Upper Fence = Q3 + 1.5 × IQR
Where:
- Q1: The First Quartile (25th percentile) of your data.
- Q3: The Third Quartile (75th percentile) of your data.
- IQR: The Interquartile Range, representing the middle 50% of the data.