① instructions\nthe shop owner splits the customers into 4 groups based on their location and then randomly…

① instructions\nthe shop owner splits the customers into 4 groups based on their location and then randomly selects 30 people from each group.\nthe shop owner surveys every 10th customer.\na survey is placed inside every order with a paid postage envelope for customers to complete and return.\nthe shop owner surveys every 3rd customer that comes into the retail shop.\nself - selected\nstratified\nsystematic\nconvenience

① instructions\nthe shop owner splits the customers into 4 groups based on their location and then randomly selects 30 people from each group.\nthe shop owner surveys every 10th customer.\na survey is placed inside every order with a paid postage envelope for customers to complete and return.\nthe shop owner surveys every 3rd customer that comes into the retail shop.\nself - selected\nstratified\nsystematic\nconvenience

Answer

Brief Explanations:

  1. Splitting customers into groups based on location and randomly selecting from each group is stratified sampling as the population is divided into strata (groups by location).
  2. Surveying every 10th customer is systematic sampling as it follows a fixed - interval pattern.
  3. Placing a survey in every order with a paid postage envelope for customers to complete and return is self - selected sampling as customers choose whether or not to respond.
  4. Surveying every 3rd customer that comes into the retail shop is systematic sampling as it has a fixed sampling interval.

Answer:

  1. Stratified
  2. Systematic
  3. Self - Selected
  4. Systematic