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?
Selecting subjects by convenience produces this type of sample.
What is a convenience sample?
The number of times a value occurs in a data set.
What is frequency?
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?
Each individual member of the population has an equal chance of selection.
What is random sampling?
The ratio of times a value occurs to total outcomes.
What is relative frequency?
Heights and weights are examples of this type of quantitative data.
What is continuous data?
The group of all subjects being studied.
What is a population?
Selecting subjects by dividing the population into groups and surveying an equal number of members from each group.
What is stratified sampling?
The accumulation of all relative frequencies.
What is cumulative relative frequency?
Data that is non-numeric, such as hair color.
What is qualitative data?
A portion of the population that is studied.
What is a sample?
Selecting subjects by choosing a starting point and then selecting every kth member.
What is systematic sampling?
Organizing raw data into classes and frequencies produces this.
What is a frequency distribution?
Data that is numeric, such as height.
What is quantitative data?
A ________ is a characteristic or attribute that can assume different values.
What is a variable?
Selecting subjects by dividing the population into groups and surveying every member of a select few groups.
What is cluster sampling?
The way data is categorized into nominal, ordinal, interval, or ratio.
What are levels of measurement?