According to latest (2018) CDC data (bit.ly/BabiesByMonth), for the US , August, followed by July. I expect the cause is sex during the months of November and December…
Is “parameterization” or “parametrization” correct when describing which parameters describe a statistical model?
The Oxford English Dictionary recognizes both as options (and even parameterisation, imagine that!), so you can choose the one you like. I ran a Google Trends search to see usage of the 3 spellings over the past 15 years (bit.ly/Paramewhat); “parameterization” was the clear winner.