Basecamp: Sampling

A ___________ is defined as the group to which the results of research are intended to be generalized

Population

Simple random sampling and cluster sampling are examples of: Probability sampling Sampling with replacement sampling without replacement non probability sampling

Probability sampling

Selecting subjects deliberately based on predefined criteria is an example of which type of sampling? Systematic sampling Quota sampling Purposive sampling Convenience sampling

Purposive sampling

A sampling method in which each unit that is selected for the sample is put back into the population before the next unit is drawn from the sample is known as: Probability sampling Sampling with replacement sampling without replacement non probability sampling

Sampling with replacement

What type of sampling is utilized when subjects are selected by asking existing subjects to identify the names of other potential subjects? Snowball sampling Quota sampling Purposive sampling Convenience sampling

Snowball sampling

Match the type of sampling to the appropriate description: systematic sampling

Subjects are selected by taking the nth subject from the population

Match the type of sampling to the appropriate description: Simple random smapling

Subjects have an equal chance of being selected for the sample

Match the type of sampling to the appropriate description: Cluster sampling

The population is divided into clusters and a random sample of the clusters is selected

Match the type of sampling to the appropriate description: Stratified random sampling

The population is divided into homogenous subgroups and then a simple random sample is drawn from each subgroups

Sampling by state is an example of which sampling method? cluster sampling convenience sampling snowball sampling simple random sampling

cluster sampling Cluster sampling is a form of probability sampling involving the division of the population into clusters (usually by geographic region), before taking a random sample of each cluster. Convenience and snowball sampling are examples of non-probability sampling.

Which type of sampling occurs when a group of physical therapy students conducting a research study utilize their classmates as the sample population? simple random sampling convenience sampling cluster sampling systematic sampling

convenience sampling Convenience sampling is a non-probability sampling method that involves the selection of a sample population that is readily available and logistically convenient. The remaining options are probability sampling methods that involve a form of random selection of subjects.

Sampling ________ is the chance difference between the static calculated from a sample and the true value of the parameter in the population

error

Which term is best described as the complete collection of elements to be studied? cohort group population sample

population The population is referred to as the complete collection of elements to be studied or stated differently, the group to which the results of research are intended to be generalized.

Systematic sampling and cluster sampling are examples of which type of sampling method used in human research? probability sampling non-probability sampling sampling with replacement snowball sampling

probability sampling Systematic sampling and cluster sampling are examples of probability sampling since both methods utilize a form of random selection of subjects. Other forms of probability sampling include simple random sampling and stratified random sampling.

Which sampling method would be the most desirable when a research study involves human subjects? probability sampling without replacement non-probability sampling without replacement probability sampling with replacement non-probability sampling with replacement

probability sampling without replacement Sampling without replacement is a sampling method in which a unit selected from the population is not returned to the population and therefore, cannot be selected again for the same sample. This form of sampling is most often used with research studies involving human subjects. Probability sampling is preferable because it eliminates researcher bias in the selection of subjects.

Researchers investigating the effects of an intervention on an extremely rare genetic condition would most likely utilize which sampling method? simple random sampling systematic sampling cluster sampling purposive sampling

purposive sampling Purposive sampling involves the selection of subjects based on predefined criteria chosen by the investigators. This sampling method is often utilized when the population being studied is small.

Which of the following sampling methods is an example of non-probability sampling? stratified random sampling simple random sampling cluster sampling quota sampling

quota sampling Non-probability sampling does not involve random selection of subjects. Quota sampling is an example of non-probability sampling that involves convenience sampling after stratification.

Flipping a coin to determine which participants in a study are in the control group versus the treatment group is a form of: blinding crossover matching randomization

randomization Randomization is used to achieve a balance between treatment and control group subjects and to avoid investigator bias. Methods of randomization range from using complicated software to simply flipping a coin.

The best way to create representative experimental and control groups is by assigning participants through: randomization availability self-selection precision matching

randomization Randomization is used to achieve a balance between treatment and control group subjects and to avoid investigator bias. Methods of randomization range from using complicated software to simply flipping a coin.

A sampling method in which the population size decreases as the size of the sample increases is known as: Probability sampling Sampling with replacement sampling without replacement non probability sampling

sampling without replacement

Which sampling method involves asking current research subjects to identify the names of other potential participants? convenience sampling simple random sampling snowball sampling cluster sampling

snowball sampling Researchers using snowball sampling ask current subjects to identify other potential subjects. Snowball sampling is used when the characteristic to be studied is rare and it is extremely difficult or costly to identify individuals with this characteristic.