math question how do you know what kind of sampling?

One month, the electric company sends surveys with every electric bill. The company requests that customers return the survey with the bill. Which type of sampling method is being used?

voluntary response sampling

convenience sampling

systematic sampling

stratified random sampling

Question

math question how do you know what kind of sampling?

One month, the electric company sends surveys with every electric bill. The company requests that customers return the survey with the bill. Which type of sampling method is being used?

       voluntary response sampling

       convenience sampling

       systematic sampling

       stratified random sampling

campbell_st · Answer

well customers aren't obliged to complete the survey... so its the 1st choice...

anonymous · Answer

oh alright thanks i thought it was the last one >.<

anonymous · Answer

If "requests" implies requiring the survey to be returned, then it's convenience sampling. If not, it's also voluntary-response.

anonymous · Answer

@oldrin.bataku thank you for that explanation