Kingnoanswer A common form of nonresponse in telephone surve

King-no-answer. A common form of nonresponse in telephone surveys is \"ring-no-answer.\" That is, a call is made to an active number but no one answers. The Italian National Statistical Institute looked at nonresponse to a government survey of households in Italy during the periods January 1 to Easter and July 1 to August 31. All calls were made between 7 and 10 P.M. but 21.4% gave \"ring-no-answer\" in one period versus 41.5% \"ring-no-answer\" in the other period. Which period do you think had the higher rate of no answers? Why? Explain why a high rate of nonresponse makes sample results less reliable. The environment and the economy. Here are two opinion poll questions asked in December 2009 about protecting the environment versus protecting the economy. Often there are trade-offs or sacrifices people must make in deciding what is important to them. Generally speaking, when a trade-off has to be made, which is more important to you: stimulating the economy or

Solution

4.8)

The higher no-answer was probably the second period

More families are likely to be gone for vacations, etc.

Nonresponse of this type might underrepresent those who are more affluent .