Interquartile Range Calculator
Results:
First Quartile (Q1):
Third Quartile (Q3):
Interquartile Range (IQR):
The interquartile range (IQR) is a crucial measure in statistics that helps you understand the spread of your data. Our Interquartile Range Calculator makes it easy to compute this important statistical measure quickly and accurately.
First Quartile (Q1):
Third Quartile (Q3):
Interquartile Range (IQR):
The interquartile range is the difference between the third quartile (Q3) and the first quartile (Q1) of a dataset. It represents the middle 50% of your data and is less sensitive to outliers compared to the range.
To calculate the IQR manually:
Dataset: 2, 4, 6, 8, 10, 12, 14, 16, 18
Understanding and calculating the interquartile range is essential for many statistical analyses and data interpretation tasks. Our Interquartile Range Calculator simplifies this process, allowing you to focus on interpreting your results rather than manual calculations. Try our calculator now to gain valuable insights into your data’s distribution and identify potential outliers with ease!
While range measures the difference between the maximum and minimum values, IQR focuses on the middle 50% of the data, making it less sensitive to outliers.
IQR is most useful for continuous data but can also be applied to ordinal data. It's not suitable for nominal (categorical) data.
A large IQR suggests a wider spread of the middle 50% of your data, indicating more variability in your dataset.
Values below Q1 - 1.5*IQR or above Q3 + 1.5*IQR are typically considered potential outliers.
While IQR is generally robust, very small sample sizes might not provide a reliable IQR calculation.
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