First Quartile Calculator

Calculates the value of the first quartile (Q1) for a given dataset, which represents the 25th percentile. This statistic divides the data into four equal parts, identifying the point below which the lowest quarter of observations falls. Users input a set of numerical values, and the tool processes them to determine the median of the lower half of the ordered distribution. The calculator provides a precise statistical measure that quantifies the spread of the bottom 25 percent of the data points. Students, analysts, and researchers utilize this tool when they need to understand the symmetry or skewness within a dataset. By establishing the first quartile, users can calculate the interquartile range (IQR) along with the third quartile, providing a robust measure of statistical dispersion that is less sensitive to outliers than standard deviation.