Okay, I want to calculate for a particular pair of numbers, how much, in a simple %, the "range"/variance? is.

Lets say for x and y:

((x-y)/((x+y)/2))*100

1. What is this formula called?

2. Is it applied in basic finance?

3. Can it be simplified further?

I think it can be simplified futher as

[200(x-y)]/(x+y)

I cant remember sh1t from my high school maths so... any help appreciated as to what I am doing here. Thanks.

So, for example, x = 1.33 and x = 0.99, I get 29.31%

The practical application is as follows:

For a particular currency pair, a quick calculation of this "range/variance" within a time period, say 2 years, where you only know the maximum and minimum.

1.33 and 0.99 is the maximum and minimum of a 2 year period of the currency pair AUDSGD. So applying the formula this "range/variance" is 29.31%.

Kind of a measure of volatility... but not sure what the proper technical term is.

Is this something like a very simplified "percentage band" that the currency pair trades in within a certain time period, sampling only the maximum and minimum?

Lets say for x and y:

((x-y)/((x+y)/2))*100

1. What is this formula called?

2. Is it applied in basic finance?

3. Can it be simplified further?

I think it can be simplified futher as

[200(x-y)]/(x+y)

I cant remember sh1t from my high school maths so... any help appreciated as to what I am doing here. Thanks.

So, for example, x = 1.33 and x = 0.99, I get 29.31%

The practical application is as follows:

For a particular currency pair, a quick calculation of this "range/variance" within a time period, say 2 years, where you only know the maximum and minimum.

1.33 and 0.99 is the maximum and minimum of a 2 year period of the currency pair AUDSGD. So applying the formula this "range/variance" is 29.31%.

Kind of a measure of volatility... but not sure what the proper technical term is.

Is this something like a very simplified "percentage band" that the currency pair trades in within a certain time period, sampling only the maximum and minimum?