An important aspect of supervision is ________, which attempts to insure that the interviewers are strictly following the sampling plan rather than selecting sampling units based on convenience or accessibility

Jones offers to sell Smith his car. Smith thinks Jones is selling his 2015 Toyota, and Jones thinks he is selling his 2014 Buick. This is an example of which of the following?

A) Misunderstanding B) Common mistake or shared mistake C) Unilateral mistake or one-sided mistake D) Fraudulent misrepresentation E) Non est factum

A mobile phone manufacturing company is said to functionally modify one of its products if it:

a. introduces a sleek and stylish version of the mobile phone with the same specifications. b. reduces the price of the mobile phone ahead of a sale. c. introduces stylish headphones for the mobile phone. d. releases a software update to fix the mobile phone's heating problem.