Convenience sampling relies on which of the following?

If a researcher conducts a study and chooses for a sample all the members of a psychology class because he thinks they will make the best subjects, that is an example of:

If I conduct a research and recruit for my sample my friend Joe, and he recruits his friend Amber, and she recruits her friend Sophia, that is an example of:

A study aimed at assessing the job satisfaction levels of employees in a large organization involved selecting participants from different departments until a predetermined number of participants was reached for each department. What type of sampling technique was employed?

Kirsty would like to survey what people enjoy eating for lunch in the canteen. She lists all the members in the population and gives them a unique reference number. After selecting the first member at random, she then selects the remainder of the sample over a specified interval. What type of sampling method is Kirsty using?

Peter is carrying out a survey. He would like to find out how many miles people drive per day. He divides the population into a two way table, and calculates the proportion of each category required for his sample. Which sampling technique is Peter using?

Laura has a sampling frame of all the people who are members of a club. She gives each member a unique reference number and uses a random number generator to select the sample. Which sampling method is Laura using?

The WXY company has offices in 10 cities across the country (all with roughly the same number of employees in similar roles). Jay don’t have the capacity to travel to every office to collect the data he needed, so he use random sampling to select 3 offices – these are the clusters.

Statement R: Stratified Sampling is used in situation where the population can be easily divided by groups.

Statement S: Elements within a group are heterogeneous with respect to characteristics