Link	Description
https://www.youtube.com/watch?v=LCDiQxB5S84&t=476s	About log transformation.
https://www.youtube.com/watch?v=IFKQLDmRK0Y	About quantiles.
https://www.youtube.com/watch?v=okjYjClSjOg&t=220s	About QQ plots.
https://www.youtube.com/watch?v=I10q6fjPxJ0	"Till 7:41 min, about hypothesis testing ."