Since I will be studying the Bivariate Data section on one of our Year 13 (UK age 17-18) Statistics modules soon I was rather pleased to see that it is now really easy to use Desmos for Regression. The video shows how simple it it to use.
I tried this with some data from an A level question then also added another expression and table to see the values predicted by the model.
It is also simple to use Excel – just add the data, insert a chart – choose Scatter, then add a trend line.
…or we could just pop the points into WolframAlpha and have it do all the work to check our calculations!