Stats

Issue to be considered for the secondary data include which of the following

• Sufficiency

• Reliability

• Suitability

• All of the above

The process of selecting a number of participants for a study in such a way that they represent the larger group from which they were selected is known as

• Research Design

• Sampling

• Data Collection

• Random Assignment

A researcher finds that people who are more hostile have higher total cholesterol levels than those who are less hostile.

• Observational

• Experimental

Subjects were randomly assigned to two groups, and one group was given an herb and the other group a placebo. After 6 months, the numbers of respiratory tract infections each group had were compared.

• Observational

• Experimental

When the population of college professors is divided into groups according to their rank (instructor, assistant professor, etc.) and then several are selected from each group to make up a sample, the sample is called a ______ sample.

• Random

• Stratified

• Systematic

• Cluster

Mail carriers of a large city are divided into four groups according to gender (male or female) and according to whether they walk or ride on their routes. Then 10 are selected from each group and interviewed to determine whether they have been bitten by a dog in the last year.

• Random

• Stratified

• Systematic

• Cluster

In a large school district, all teachers from two buildings are interviewed to determine whether they believe the students have less homework to do now than in previous years.

• Random

• Stratified

• Systematic

• Cluster

A sample study is a study of

Group of answer choices

• Whole population

• Only representative items

• 51 items

• None of these

A study that involves no researcher intervention is called

• An  experimental study

• A noninvolvement study

• An observational study

• A quasi-experimental study

A researcher divided subjects into two groups according to gender and then selected members from each group for her sample. What sampling method was the researcher using?

• Random

• Stratified

• Systematic

• Cluster