Scott has 25 baseball cards in his collection. on his birthday, scott’s grandfather gives him his collection of 100 baseball cards. scott trades 50 of his cards at the baseball card shop. how many cards did scott not trade?

Identify all the cases where non-probability sampling is used when attempting to study the characteristics of a large city. studies on every subject in the population divide a population in groups and obtain a sample studies with a limited amount of time demonstrate existing traits in a population studies with the nth person selected