Exam 9: Sampling Methods and Sample Size

The main factors that have a direct effect on the size of the sample include all of the following except

Controlling sample bias is achieved by all of the following methods except

The more confident a researcher wants to be, the larger the sample should be.

Precision and confidence are interrelated and within a given sample size, increasing one may be done at the expense of the other.

Nonprobability sampling techniques include all of the following except

Sample bias can be reduced by increasing the sample size.

Non-sampling error is introduced into the research results from any source other than sampling.

A stratified sample is characterized by the fact that the total population is divided into mutually exclusive subgroups and that a simple random sample is then chosen from each subgroup.

Precision and confidence are interrelated and with a given size sample, increasing one will

The size of the sample will be a function of the accuracy of the sample.

If a researcher wants a 99.7% level of confidence (Z-Value = 3.00) and has determined the acceptable precision width to be 90, the sampling error on either side of the mean would be

In using the "typical" sample size method of choosing a sample size, for every less important subgroup the sample should have ____ or more respondents per subgroup.

Out of all possible samples of a certain determined size of coin flips, 95 percent will differ from the actual population by no more than three percentage points indicates

A sample is the term that refers to the group surveyed any time the survey is not administered to all members of the population.

In a stratified sample the population is divided into mutually exclusive subgroups and the random sample of subgroups are selected for the sample.

The process of selecting a smaller group of people which have basically the same characteristics and preferences as the total group is called

A characteristic of probability samples is

Nonprobability sampling techniques include the convenience sample, judgment sample, and quota sample.

In using the "typical sample size" method of determining the size of a sample, for every major subgroup in the study you should have only 1,000 respondents.

Random error cannot be avoided, but can be calculated and can be reduced by decreasing the size of the sample.