Levels of Measurement
Types of Data
Types of Samples
Sampling Techniques
Data Collection
100
Data at this level is categorized using names, labels, or qualities.
What is Nominal Measurement?
100
A numerical description of population characteristics.
What is a Parameter?
100
It is important for the sample to have members from each segment of the population.
What is a Stratified Sample?
100
A count or measure of an entire population.
What is a Census?
100
A controlled study in which the researcher attempts to understand cause-and-effect relationships.
What is an Experiment?
200
At this level, a zero entry simply represents a position on the scale; the entry is not an inherent zero.
What is Interval Measurement?
200
A subset or a part of a population.
What is a Sample?
200
The population falls into naturally occurring subgroups, each having similar characteristics.
What is a Cluster Sample?
200
The difference between the results of a sample and those of the population.
What is a Sampling Error?
200
Occurs when an experimenter cannot tell the difference between the effects of different factors on the variable.
What is a Confounding Variable?
300
The measurements can have a value of zero as well.
What is Ratio Measurement?
300
The collection of all outcomes, responses, measurements, or counts that are of interest.
What is a Population?
300
Each member of the population is assigned a number.
What is a Systematic Sample?
300
A count or measure of part of a population?
What is a Sampling?
300
The repetition of an experiment under the same or similar conditions.
What is Replication?
400
Data at this level can be arranged in order, or ranked, but differences between data entries are not meaningful.
What is Ordinal Measurement?
400
Consists of numerical measurements or counts.
What is Quantitative Data?
400
Consists only of members of the population that are easy to get.
What is a Convenience Sample?
400
Every member of the population has an equal chance of being selected.
What is a Random Sample?
400
An investigation of one or more characteristics of a population.
What is a Survey?
500
A variable in an expression, equation, or function, that has it’s value determined by the choice of another variable.
What is a Dependent Variable?
500
Consists of attributes, labels, or non-numerical entries.
What is Qualitative Data?
500
A set of items that have been drawn from a population that had an equal opportunity to be the sample.
What is a Random Sample?
500
Complex cluster form of sampling.
What is a Multistage Sampling?
500
The use of mathematical or physical model to reproduce the conditions of a situation or process.
What is Simulation?
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