[sxp]

One other factor that's missing from the study is the level of success achieved by the companies. Instead of just grouping companies into "Generating Revenue"/"Profitable" or "IPO'd", they should have done a breakdown by how successful the company is. If the stereotype that bell curves for men and women have the different stdevs is true, then the data would show that companies founded by men have both a higher chance of failure (higher risk) but also a larger return on investment. Unfortunately, most gender based studies tend to only care about the means of the samples and ignore the stdevs. For something like the founding of a successful company, the black swans at the tail of the bell curves matter more than the rest of the bell curve which consists of failures or mediocre successes.