General Statistics
What is a characteristic or attribute that can assume different values?
Variable
What kind of variables have distinct categories to some characteristic or attribute?
Zip Codes are an example of this level of measurement.
Nominal
Using this type of sampling, a sample is obtained by dividing the population into sections or clusters and then selecting one or more clusters and using all members in the cluster(s) as the members of the sample.
Cluster
This happens when subjects used in a study respond favorably or show improvement due to the fact that they had been selected for the study.
Placebo Effect
What is the science of conducting studies to collect, organize, summarize, analyze and draw conclusions from data.
Statistics
What type of variables can be counted or measured?
Quantitative
Rankings of college football teams is an example of this level of measurement.
Ordinal
Using this type of sampling, all members of the population have an equal chance of being selected as a sample.
Random
Observational
What is a group of subjects selected from a population?
Sample
These types of variables can be counted.
Discrete
Nationality is an example of this level of measurement.
Nominal
This is called the difference between the results obtained from a sample and the results obtained from the population from which the sample was selected.
Sampling Error
In this type of study, the researcher manipulates one of the variables and tries to determine how the manipulation influences other variables.
Experimental
Descriptive Statistics
These variables can assume an infinite number of values between any two specific values. These are obtained by measuring.
Continuous
Temperature is an example of this level of measurement.
Interval
Using this type of sampling, a sample is obtained by dividing the population into subgroups or strata according to some characteristic relevant to the study. Subjects are selected from each subgroup.
Stratified
In an experimental study, this is the variable that is manipulated by the researcher.
Independent Variable
What is the type of statistics consisting of generalizing from samples to populations, performing estimations and hypothesis tests, determining relationships among variables and making predictions.
Inferential Statistics
This is defined as a class in which a data value would be placed before the data value is rounded.
Boundary
Salary is an example of this level of measurement.
Ratio
Using this type of sampling, respondents decide for themselves if they wish to be included in the sample.
Volunteer or Self-Selected
This variable is one that influences the dependent or outcome variable, but was not separated from the independent variable.
Confounding Variable