Medical Data Visualizer -- Normalization & long format clarification

#1

Hello,

I just need clarification on two things:

  1. on the step of “Normalize the data by making 0 always good and 1 always bad”, is that only for the cholesterol and gluc fields, or for all of them (smoke, alco, active, etc.)

  2. what does “long format” mean? Does that mean to convert the values or something else?

Thanks for any guidance you can provide.