What Are Quartiles And Where Do We Use Them?

The interquartile range serves another crucial purpose and is a less sensitive indicator of the spread of a data set. The interquartile range helps determine when a number is an outlier because of its resilience to outliers. We may determine if we have a weak or moderate outlier using the interquartile range method. And if you feel a hurdle in computations, we recommend you utilize the best quartile calculator by calculator-online.net.

What Exactly Are Quartiles?

The values that partition your data into quarters are called quartiles. The quartiles, which divide your data into four pieces based on where the numbers lie on the number line, are not formed like pizza slices. A data collection is divided into quartiles using the following four quarters:

  • The 25th percentile of numbers.
  • 25% of the following lowest numbers (up to the median).
  • 25% of the second-highest numbers (above the median).
  • The top 25% of the numbers.

You can determine any quartile in a data set with the help of the free online quartile calculator. What do you think now?

Digging Deeper!!!

The data set is divided into 4 quarters when we talk about quartiles. 25% of the total amount of data points are distributed each quarter. The number in the data set with 25% of the data points below it and 75% above it is known as the first quartile or Q1. The number in the data set where 50% of the data points are more than this value and 50% are less is known as the second quartile or Q2. The value at which 75% of values are lower than this value and 25% of values are more than this value, is known as the third quartile, or Q3. Whatever the quartile value is, now you can instantly calculate it using the online quartile calculator by calculator-online.net.

Practical Illustration of Quartiles:

Examples of how range is used in the real world are the daily temperature ranges stated on a weather report and the minimum and maximum water levels in a reservoir. Outliers can, however, dramatically affect the range values when there is any present. Because we “ignore” the lowest 25% of the data points and the top 25% of the data points, we instead opt to employ the IQR. The IQR statistic has greater resistance to outliers. IQR rather than range provides a better indicator of the degree of dispersion in the data when there are outliers present. The quartiles are used by certain businesses to benchmark rival businesses.

How Is The Quartile Applied In Real Life?

Certain businesses use the quartiles to benchmark rival businesses. For instance, the first quartile of the top 20 firms in that region is where the median company pay for a certain position is established. When you make a box plot of your data set, you normally employ the quartiles and IQR information. And when you need fast calculations, you must employ the quartile calculator.

What Do The Quartiles Indicate?

Like how the median divides a data set into halves, quartiles allow us to determine the dispersion of a data collection. You can determine this dispersion by using the quartile calculator, no doubt, in a matter of seconds. As a result, to get the quartiles, we must first add the two scores closest to each quartile, then divide the sum by two.


About the Author

Lillie Byrd

Lillie Byrd is a saving expert for CouponKirin. He has been a newspaper reporter and editor, authored a personal finance book in 2012. She previously was a reporter at Digital Journal, covering consumer products, society, and other business topics. She also has a certificate in finance from Boston University.