Let's get started! One thing about regression is typically requires that all of the input data values are numbers, but in the data frame above we have a number of boolean (i.e. true/false) values. So the first thing we need to do is to convert those values into numbers. We can do this using: df[!,:x] = convert.(Float64,df[!,:x])

room_number lecturer_mask box_filter good_ventilation student_number studen 1 1 true false true 1 5.0 2 1 true false true 2 5.0 3 1 true false true 3 5.0 4 1 true false true 4 5.0 5 1 true false true 5 5.0 6 1 true false true 6 5.0 7 1 true false true 7 5.0 8 1 true false true 8 10.0 9 1 true false true 9 10.0 10 1 true false true 10 10.0 more 69300 1100 false true true 63 45.0