Identify each of the following as quantitative data or categorical data.

a. The platelet counts in Data Set 1 “Body Data” in Appendix B
b. The cigarette brands in Data Set 13 “Cigarette Contents” in Appendix B
c. The colors of the M&M candies in Data Set 27 “M&M Weights” in Appendix B
d. The weights of the M&M candies in Data Set 27 “M&M Weights” in Appendix B