How much time a person spent on social networking sites (like Facebook, Twitter, etc.) is an example of a 5) variable 6) The volume of water released from a dam is an example of variable of a...

Please I want answer of these questions. Thanks

Extracted text: How much time a person spent on social networking sites (like Facebook, Twitter, etc.) is an example of a 5) variable 6) The volume of water released from a dam is an example of variable of a numerical variable 7) The days of a year is an example of a variable of a categorical variable If a frequency distribution consists of class intervals '40 but less than 50', '50 but less than 60', etc., then class interval is 8)