Exam 8: Qualitative and Quantitative Sampling

Refer to the following paragraph to answer the questions below. Dr. Martinez draws a systematic random sample of 350 churches from all churches and religious institutions in the 3 Pacific coast states of the continental U.S. His sampling frame has 35,000 institutions. -What is the sampling ratio?

What is the central limit theorem? How does this theorem justify the use of random samples?

Refer to the following paragraph to answer the questions below. The Young Children's Charity would like to provide an accurate estimate of how much it costs to raise a child between the ages of 2 and 12 for its fund raising campaign. They contracted with you to find out how much households spent on raising a child in 1996. They gave you a list all 400,000 residential telephone customers in the area they will operate the campaign. You sampled every 400th address on the list. The Charity will have a survey company contact each household sampled and ask whether or not there is a child between 2 and 12 years of age living in the household. If there is, they will ask other questions and record the total amount spent raising a child during 1996. -According to the central limit theorem used in inferential statistics

Explain how one would select a simple random sample from a population. Be sure to include the appropriate selection of a sampling frame and sampling ratio.

Refer to the following paragraph to answer the questions below. The Young Children's Charity would like to provide an accurate estimate of how much it costs to raise a child between the ages of 2 and 12 for its fund raising campaign. They contracted with you to find out how much households spent on raising a child in 1996. They gave you a list all 400,000 residential telephone customers in the area they will operate the campaign. You sampled every 400th address on the list. The Charity will have a survey company contact each household sampled and ask whether or not there is a child between 2 and 12 years of age living in the household. If there is, they will ask other questions and record the total amount spent raising a child during 1996. -How large is your sample?

When is a sampling frame used? Why is it important to have an accurate sampling frame?

A sampling technique often used by qualitative researchers in which a sample builds during the study process as new insights lead the research to new respondents is called a

What is the calculation derived from a sample that is intended to estimate a population parameter?

Refer to the following paragraph to answer the questions below. The Young Children's Charity would like to provide an accurate estimate of how much it costs to raise a child between the ages of 2 and 12 for its fund raising campaign. They contracted with you to find out how much households spent on raising a child in 1996. They gave you a list all 400,000 residential telephone customers in the area they will operate the campaign. You sampled every 400th address on the list. The Charity will have a survey company contact each household sampled and ask whether or not there is a child between 2 and 12 years of age living in the household. If there is, they will ask other questions and record the total amount spent raising a child during 1996. -In this study, each address of a telephone customer is your

The is the large group of cases that the researcher wants their study to generalize to; the is the small group of cases that the researcher actually studies.

What is the difference between nonprobability sampling and probability sampling? When is each sampling method appropriate?

Vince wants to draw a sample of people in Illinois who own 1960s Schwinn Sting-Ray children's bicycles, a collector's item. There is no list of the people, but there is an informal network acquaintances) of Sting-Ray owners. What type of sampling should Vince use?