Probability Sampling
Nonprobability sampling
Evidence in Quantitative Research
Levels of Measurement
Reliability and Validity
100

This type of sampling is used in research where known variables in the population are critical for receiving representativeness

What is stratified random sampling?

100
Nonprobability sampling can be a threat to:
What is internal validity via selection bias?
100

Can be used to measure pain, fatigue, quality of life, and health status

What is a visual analog scale?

100

The highest level of measurement; allows researcher to conduct descriptive and inferential stats (age, weight, height, income)

What is ratio?

100

An instrument is said to have this when it measures what it is SUPPOSED to measure

What is validity?

200

Sampling method also known as multistage sampling; includes lists of states, cities, institutions, or organization with which elements of identified population can be linked

What is cluster sampling?

200

In this type of non-probability sampling, researcher enters available subjects into the study until desired sample size is achieved

What is convenience sampling?

200

Printed instrument used to gather numerical data

What is a questionnaire?

200

Example of this level of measurement includes Likert Scales; the second lowest level of measurement

What is ordinal?
200

This method of determines stability of an instrument by using the new instrument more than once under similar circumstances

What is test-retest?

300

Considered the most effective in obtaining a representative sample.

What is simple random sampling?
300

This type of nonprobability sampling is similar to stratified random sampling in the way that is selects samples from strata, yet differs due to the lack of randomization in selecting elements

What is quota sampling?

300
Likert scales obtain this many points on an agree or disagree continuum

What is seven?

300
True or False questions may be used in this level of measurement; the weakest level of measurement

What is nominal?

300

This tests reliability using 2 observers to measure the same event

What is interrater reliability?

400

This type of sampling uses a formula in selecting elements in research

What is systematic random sampling?

400

This type of nonprobability sampling may include snowball sampling and network sampling

What is purposive sampling?

400

Quantitative data obtained by assigning numerical values to biological, chemical, and microbiological phenomena

What are physiological measures?

400

In this level of measurement, the distance between each value on the scale are equal and there is a meaningful value between the distances.

What is interval?

400

This type of reliability test determined the internal consistency of the instrument; is frequently used with dichotomous items

What is Kuder-Richardson coefficient?

500

This type of sampling ensures that all levels of identified variables are represented

stratified random sampling

500

This type of nonprobability sample is useful when the aim is theory and concept development

What is theoretical sampling?

500

Quantitative data that is often used in EBP and Quality Improvement Projects

What is an. electronic medical record (EMR)?

500

In this level of measurement, higher numbers mean higher value, but intervals are not equal

What is ordinal?

500

This type of test for instrument reliability is used with internal or ratio measurement

What is Cronbach's alpha?

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