When creating basic multiple regression models, if your predictor variables correlate with each other this usually presents a problem in that you can end up with unstable estimates for the resulting coefficients. One way to test for multi-collinearity is to check for a relatively high Variance Inflation Factor, or VIF. Many packages exist that make … Continue reading Situations when multicollinearity in regression model variables isn’t important
Tag: Model
Study estimates that the Covid-19 vaccines saved 15 million lives last year
In a new study published in the Lancet, Watson et al. estimate that by the end of 2021, the Covid-19 vaccines have prevented an estimated 14.4 million deaths (with a 95% credible interval of between 13.7- 15.9 million deaths) . The estimate would rise to 19.8 million (19.1 - 20.4 million 95% CrI) if they … Continue reading Study estimates that the Covid-19 vaccines saved 15 million lives last year
How many teachers do we need? The official Governmental model
How do we know how many teachers are required to keep the UK's schools in good working order? It's an interesting question, with obvious implications for Governmental education policy with regards to teacher compensation, incentives, training places and so on. The "official" requirements are calculated via the Government's "Teacher Supply Model", which, happily, in the … Continue reading How many teachers do we need? The official Governmental model
Dabbling with Data 