How do you Calculate a Not-too Diverse IQR/Range

[01damage]

Note: This topic requires high skills in math and statistics, and may not make sense for some.

Second Note: I do not mean positive digits (like a number above zero), I mean a good and not-too diverse IQR/range.

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First of all, when a price range for a graphics render, build, or other service, is only R$50 and is negotiable, you would think it starts at R$50. Statistically, it is not good to have an extremely diverse IQR (inter-quartile range) or an extremely diverse range (in this case). Why is this? This is because, when you hire someone for a service or product you expect to keep the same type of quality in mind. If you want the quality to be decent, you would not pay $10 - $1000, because there is a huge difference in what those prices can get you. The lower range the better.

I gave my thoughts on how to calculate a positive IQR/range here:

Hiring Professional Scripters

I understand how prices are negotiable but I assume when you say: You are saying, “Starting price is R$50.” This kind of ties into statistics so bare with me. For anything—your classmates’ grades—price values, any statistic, the range should not be too diverse. Let’s say your classmates’ overall grades where this: Q-1: 55% average Q-3: 89% average The inter-quartile range would be 89 - 55, which is 34. I kind of calculate a positive range in a similar way of finding the outlier in math; ca…

But now I am wondering, how do you calculate a positive IQR/range.

I don’t expect for this topic to get a lot of replies as some users will not understand this, or will not commonly use this data.

[AstroCode (Ella)]

Your IQR will always be positive when working with a positive data set like money. I don’t understand what you’re trying to accomplish.

[01damage]

Not a positive digit, but a good and not-too diverse IQR.

And in this case, there are no quartiles since we are just using a basic range (the R$50 GFX example). Although I am asking users how they calculate a not-too diverse IQR/range, the example I gave has no quartiles.

[AstroCode (Ella)]

Without a data set, this is just guess work. This is likely better learned through experience or advice from others because currently you don’t have any data for any statistical analysis.

[01damage]

I do not have any data currently, and I am looking for ways you calculate a consistent IQR/range so I may use that method in the future.

Tl;dr
This is just for future reference.

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Edit:

@AstroCode

This is likely better learned through experience or advice from others

I am requesting advice in this topic.