Stats quiz 4

Which of the following is true about finding a sample that represents your population?

A very heterogeneous population requires a larger sample

Hank is helping his friend Marie conduct a study on helping behavior by pretending to drop a pile of papers and seeing if people offered to help him pick them up. Marie hides find a tree and observe the interaction. This is an example of

Covert observation

Which of the following is true?

Covert observation requires consideration of the ethics involved with observing someone without their awareness while overt observation does not

Which of the following is an advantage of observational research compared to survey research?

Observational research examines what people actually do not what they say they do

Survey research can allow researchers to

Obtain information about behaviors that cannot be observed

The type of probability sampling that results in the sample representing keys subpopulations based on specific characteristics is

Stratified random sampling

Which of the following is a type of probability sampling?

Stratified random sampling

Gus is asking a standard set of questions to each of his participants one on one. He doesn't very the order or manner in which they are asked. He is using which descriptive method?

Structured interview

Self-report may be inaccurate due to the

Social desirability bias

Researchers typically aim for a _____confidence interval.

5%

Researchers often choose a _____ confidence level.

95%

Which of the following is an example of a cluster?

A neighborhood

Which of the following is an advantage of archival research?

Archive span a large time frame so they allow for analysis of historical trends

A _____ observer in a study doesn't know what the study of hypotheses are.

Blind

What do you simple and stratified random sampling have in common?

Both require the researcher to identify all members of the population

Jesse is conducting an observational study too fast food purchases in before starting the observation. You create a list of possible purchases. He has chosen to use a ______ to collect his data

Checklist

Pink is helping his friend Marie conduct a study on helping behavior by pretending to drop a pile of papers in seeing if people offered to help him pick them up. Thanks role in this study is as a

Confederate

A ______ is an estimation of the margin of error for your scores.

Confidence interval

A sample that is made up of those volunteers or others who are readily available and willing to participate is known as what type of sample?

Convenience sample

What is the first step in simple random sample.?

Define the population

______ Research is designed to answer the who what when where why and how questions

Descriptive

What is conducting an observational study on the cell phone use in public places so he records how long participants spend on their cell phones. In other words he's measuring

Duration

Which of the following is true about validity and observational research?

External validity needs to be considered more than internal validity when conducting observational research

What information do you need to estimate the minimum sample size required for a descriptive study using probability sampling?

How large the population is, the confidence interval, the confidence level

_____ are one on one conversations directed by a researcher

Interviews

Which of the following is true of nonprobability sampling?

It is less time-consuming been probability sampling

Which of the following is true of probability sampling?

It relies on the random selection

It is true of the semi structured interview?

It requires more training to administer than a structured interview

Which of the following can minimize social desirability bias?

Keeping responses anonymous

Which of the following is an advantage of using questionnaires rather than interviews?

Maintaining anonymity is easier with Questionnaires

Dr. Gomez wasn't able to collect data from 100% of his selected sample. Unfortunately the people he was able to collect data from differed from those people who didn't provide data. In other words he was dealing with

Non-response bias

Which of the following is an advantage of conduct an interview research?

Participants tend to take it more seriously than questionnaires

A preliminary study with a small sample to test measures and/or procedures is known as a ______study

Pilot

The group of people, animals, or archive you were interested in examining is your

Population

When all members of a population have an equal chance of being selected to participate in a study you are using

Probability sampling

Which of the following is a type of nonprobability sampling?

Quota sampling

Holly decides to do archival research using data from several governmental agencies. In other words she is using

Secondary data

If Skyler asked people about their attitude towards the current mayor he is conducting

Survey research

Which of the following is true about the size of a probability sample?

The larger the sample the closer it will be for representing the full population

A descriptive study would not be appropriate to use to meet which of the following goals?

To determine a cause and effect relationship between variables