Statistics
Basics
Basics
This type of statistics involves collecting, organizing, summarizing, and presenting data.
What is descriptive statistics?
A numerical measure that describes a population.
What is a parameter?
Data that is non-numeric, such as hair color.
What is qualitative data?
The number of times a value occurs in a data set.
What is frequency?
The variable that is manipulated in an experiment.
What is the explanatory variable?
This type of statistics involves making predictions and generalizations about a population.
What is inferential statistics?
A numerical measure that describes a sample.
What is a statistic?
Data that is numeric, such as height.
What is quantitative data?
The ratio of times a value occurs to total outcomes.
What is relative frequency?
The variable that responds to changes in the experiment.
What is the response variable?
Statistics uses this branch of mathematics to analyze uncertainty.
What is probability?
The group of all subjects being studied.
What is a population?
Heights and weights are examples of this type of quantitative data.
What is continuous data?
The accumulation of all relative frequencies.
What is cumulative relative frequency?
A group given a placebo treatment.
What is the control group?
Organizing data in tables and graphs is part of this branch of statistics.
What is descriptive statistics?
A portion of the population that is studied.
What is a sample?
Number of phone calls is an example of this type of data.
What is discrete data?
Organizing raw data into classes and frequencies produces this.
What is a frequency distribution?
An experiment where the subject does not know which treatment is given.
What is a blind experiment?
Analyzing results to make predictions is part of this branch.
What is inferential statistics?
A sample must be this to ensure results are meaningful.
What is representative?
Selecting subjects by convenience produces this type of sample.
What is a convenience sample?
The way data is categorized into nominal, ordinal, interval, or ratio.
What are levels of measurement?
An experiment where both researchers and subjects are unaware of treatments.
What is a double-blind experiment?