Inferential Statistics
The entire set of people or objects of interest (or "the universe").
What is a population?
The arithmetic average of a set of data.
What is the mean?
A random variable that can take on only certain values along an interval.
What is a discrete random variable.
A smaller number (a subset) of the people or objects that exist within a larger population.
What is a sample?
It has as many values above it as below it in a set of data.
What is the median?
A random variable that can take on a value at any point along an interval.
What is a continuous random variable?
A measured characteristic of a sample, such as the same mean, median or mode.
What is a statistic?
The value that is most frequently observed in a set of data.
What is the mode?
A listing of all possible outcomes of an experiment along with their respective probabilities of occurrence.
What is a discrete probability distribution?
A numerical characteristic of a population, such as the population mean, median or mode.
What is a parameter?
A common measure of dispersion of a set of data, also known as sigma squared.
What is the variance?
This discrete distribution deals with consecutive trials, each of which has two possible outcomes.
What is a binomial distribution?