Introduction to Statistics and Data

Word Definition
Statistics A way of reasoning using calculations made from data that help understand the world.
Context Tells WHO was measured, WHAT was measured, WHERE the data was collected, WHEN and WHY the study was performed, and HOW the data were collected.
Data Systematically recorded information with its context.
Data Table An arrangement of data where rows represent a case, and columns represent a variable.
Case What the data is about.
Population What is to be represented by the sample. The whole.
Sample The few cases we can examine to understand the population.
Variable Holds information about the same characteristic for many cases.
Units Quantity of amount adopted as a standard of measurement.
Categorical (Qualitative) Data Names categories. Answers questions about the categories.
(Ex. religion, favorite music, favorite food, etc.)
Quantitative Data Measured numerical values. Always have units.
(Ex. distance, weight, time, age, etc.)
Two Types of Quantitative Data Discreet and Continuous.
Discreet Data Counted quantitative data. Measurable.
(Ex. minutes, distance, etc.)
Continuous Data Quantitative data that can take on any value in an interval. Measurable.
(Ex. shoe size, etc.)