In research, examining variables is a major part of a study. There are three main types of variables: continuous variables can take any numerical value and are measured; discrete variables can only take certain numerical values and are counted; and categorical variables involve non-numeric groups or categories. To unlock this lesson you must be a Study.com Member.
Tomoson.com is a service to find bloggers who are interested in doing product reviews or where bloggers can find products that they would like to review. Itâs currently in beta and free, but once out of beta, I expect that there will probably be some type of paid account required.
From 2002 to 2006, Tom served as President and Chief Executive Officer of MicroTherapeutics Inc., a publicly-held medical device company focused on neurovascular technologies. Micro-Therapeutics, Inc. was merged into ev3, Inc. in January 2006. From 1991 to 2002, Tom served at Medtronic Inc., most recently as Vice President and General Manager of its endovascular stent grafts division. During his tenure at Medtronic, he also held a variety of positions at U.S. and international locations, including Hong Kong, Belgium and The Netherlands.