Question... what are lower quartiles, inquartile range, and upper quartiles? (Aka Q1, IQR, and Q3.)

Read all about 'em. Study them.

https://www.google.com/search?q=quartiles&oq=quartiles&aqs=chrome..69i57j69i60.2178j0j7&sourceid=chrome&ie=UTF-8

Thanks for the link

You're welcome!

Lower quartile (Q1) is the median of the lower half of a dataset. It splits the data into two equal parts, with 25% of the data falling below Q1.

Upper quartile (Q3) is the median of the upper half of a dataset. It also splits the data into two equal parts, with 25% of the data falling above Q3.

Interquartile Range (IQR) is a measure of statistical dispersion. It is calculated by subtracting Q1 from Q3. IQR quantifies the spread or variability in a dataset and excludes potential outliers.

To calculate the lower quartile (Q1), follow these steps:
1. Sort the dataset in increasing order.
2. Find the median of the lower half of the data. If the dataset has an odd number of values, exclude the median itself from the calculation.

To calculate the upper quartile (Q3), follow these steps:
1. Sort the dataset in increasing order.
2. Find the median of the upper half of the data. If the dataset has an odd number of values, exclude the median itself from the calculation.

To calculate the interquartile range (IQR), subtract Q1 from Q3. It gives a representation of the middle 50% of the data and is less sensitive to outliers compared to the range.

Remember, quartiles and the IQR are useful for understanding the spread and distribution of data, particularly in skewed or non-normal distributions.