(If you already have an account, login at the top of the page)

futures io is the largest futures trading community on the planet, with over 90,000 members. At futures io, our goal has always been and always will be to create a friendly, positive, forward-thinking community where members can openly share and discuss everything the world of trading has to offer. The community is one of the friendliest you will find on any subject, with members going out of their way to help others. Some of the primary differences between futures io and other trading sites revolve around the standards of our community. Those standards include a code of conduct for our members, as well as extremely high standards that govern which partners we do business with, and which products or services we recommend to our members.

At futures io, our focus is on quality education. No hype, gimmicks, or secret sauce. The truth is: trading is hard. To succeed, you need to surround yourself with the right support system, educational content, and trading mentors – all of which you can find on futures io, utilizing our social trading environment.

With futures io, you can find honest trading reviews on brokers, trading rooms, indicator packages, trading strategies, and much more. Our trading review process is highly moderated to ensure that only genuine users are allowed, so you don’t need to worry about fake reviews.

We are fundamentally different than most other trading sites:

We are here to help. Just let us know what you need.

We work extremely hard to keep things positive in our community.

We do not tolerate rude behavior, trolling, or vendors advertising in posts.

We firmly believe in and encourage sharing. The holy grail is within you, we can help you find it.

We expect our members to participate and become a part of the community. Help yourself by helping others.

You'll need to register in order to view the content of the threads and start contributing to our community. It's free and simple.

Is there an indicator that uses the modified formula for the population variance?

Am I correct in assuming that if one standard deviation represents 68.2% of the data points, that by simply using a standard deviation of 1.0263929 to represent 70% of the data points is not accurate because of the Gaussian, bell-shape?

All indicators that I know (including StdDev, Bollinger Bands and the VWAP) use the simple formula.

The rule that one standard deviation represents approximately 68.2% of all data points is only true for normal distributions. It can be entirely false for other distributions. Prices are not distributed normally. Price volume distributions can follow anything from lognormal to power laws. On many days the volume does not even follow a unimodal (single peek) distribution, but you will often observe double or even triple distribution days. Although the standard deviation cannot be used to describe a defined percentage of volume, it is used by many traders, because it is easy to calculate.

The following user says Thank You to Fat Tails for this post: