Level of Measurement
Qualitative data only
What is the Nominal Level of Measurement
A sample in which every possible sample of the same size has the same chance of being selected.
What is a Simple Random Sample?
Info coming from observations, counts, measurements, or responses.
What is Data?
A numerical description of a sample characteristic?
What is a statistic?
The use of a mathematical or physical model to reproduce the conditions of a situation or process.
What is a Simulation?
Can be arranged in order. Both qualitative and quantitative data.
What is the Ordinal Level of Measurement?
A sample where the population is first divided into distinct subgroups, strata, based on shared characteristics, and then a random sample is drawn from each stratum.
What is a Stratified Sample?
Science of collecting, organizing, analyzing, and interpreting data in order to make decisions.
What is Statistics?
The branch of statistics that involves the organization, summarization, and display of data.
What is Descriptive Statistics?
An investigation of one or more characteristics of a population.
What is a Survey?
Quantitative data only. Zero doesn't mean none.
What is the Interval Level of Measurement?
A sampling technique that involves dividing a population into distinct groups, or "clusters", and then randomly selecting a few of those clusters to survey.
What is a Cluster Sample?
The collection of ALL outcomes, responses, measurements, or counts that are of interest.
What is Population?
The branch of statistics that involves using a sample to draw conclusions about a population.
What is Inferential Statistics?
In an experiment, a group in which no treatment is applied.
What is a Control Group?
Quantitative data only. Zero implies "nothing". Can be a multiple of something.
What is the Ratio Level of Measurement?
A sampling technique that involves selecting participants from a population at a predetermined interval, after choosing a random starting point.
What is a Systematic Sample?
A subset, or part, of a population.
What is a Sample?
A researcher observes and measures characteristics of interest of part of a population but does not change existing conditions.
What is an Observational Study?
Occurs when an experimenter can't tell the difference between the effects of different factors on the variable.
What are Confounding Variables?
Consists of attributes, labels, or non-numerical entries.
What is Qualitative Data?
Consists of numerical measurements or counts.
What is Quantitative Data?
A numerical description of a population characteristic.
What is a Parameter?
A researcher deliberately applies a treatment before observing the responses.
What is an Experiment?
Occurs when a subject reacts favorably to a placebo when in fact the subject has been given a fake treatment.
What is the Placebo Effect?