(b) (6 points) The following R output represents a summary statistics for the given dataset, Do you think that all variables are well defined? Is it correct to define the ID as character ? and why? > summary (dataset) ID Gender Nationality Age Length : 20 Female : 12 A: 7 Min. : 20.00 class : character Male : 8 B: 4 1st Qu. : 22.75 Mode : character C:9 Median : 26.50 Mean : 27 . 15 3rd Qu. : 30.25 Max . : 40.00 weight before the diet weight after the diet Min. : 99.0 Min. : 98.0 1st Qu. : 104.5 1st Qu. : 100.0 Median : 115.0 Median : 101.0 Mean : 113. 8 Mean : 104 . 3 3rd Qu. : 121.2 3rd Qu. : 107.8 Max . : 130.0 Max. : 120.0 the patient lost more than 10 Kg No : 12 Yes : 8