![]() ![]() Calculate the first quartile (Q1) by finding the median of the lower half of the data.To calculate the interquartile range, follow these steps: How to find or calculate interquartile range? The IQR provides a measure of the spread of the middle 50% of the data.It is resistant to extreme values or outliers in the dataset.The IQR is always a positive value or zero.The interquartile range possesses the following properties: In such cases, it is common to use a modified version of the IQR called the adjusted interquartile range, which is less sensitive to outliers. ![]() ![]() However, it is worth mentioning that the IQR can be influenced by outliers in the dataset. There are no specific types of interquartile range. Subtract Q1 from Q3 to find the interquartile range (IQR).Calculate the third quartile (Q3), which represents the 75th percentile of the data.Calculate the first quartile (Q1), which represents the 25th percentile of the data.Organize the dataset in ascending order.Familiarity with the concept of range and how it represents the spread of data.Knowledge of quartiles and how to calculate them.Understanding of data sets and how to organize them.The following knowledge points are necessary: To understand the interquartile range, one should have a basic understanding of statistics and data analysis. What knowledge points does interquartile range contain? And detailed explanation step by step. It is commonly taught in statistics or data analysis units. The concept of interquartile range is typically introduced in middle or high school mathematics courses. What grade level is interquartile range for? He developed these measures as a way to summarize and analyze data in a more meaningful way. The concept of quartiles and the interquartile range was first introduced by the statistician Karl Pearson in the late 19th century. In other words, it represents the range of the middle 50% of the data. It is defined as the difference between the upper quartile (Q3) and the lower quartile (Q1) of a dataset. The interquartile range (IQR) is a statistical measure used to describe the spread or dispersion of a dataset. NOVEMWhat is interquartile range in math? Definition. ![]()
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