Data Visualization Lecture Notes

These flashcards cover key concepts and terms related to data visualization as presented in the lecture notes.

Data Visualization

The presentation of data or information in easy-to-read pictorial or graphic formats with minimal text.

Bar Chart

A chart that represents data with rectangular bars; useful for comparing data across categories.

Tree Map

A visualization that uses nested rectangles to display data in hierarchical form.

Histogram

A graphical representation that organizes a group of data points into user-specified ranges (bins).

Ordinal Data

Data that represents categories with a meaningful order but no fixed interval between values.

Nominal Data

Data that represents categories without a specific order or ranking.

Exploratory Analytics

Data analysis to discover patterns and insights.

Confirmatory Analytics

Analysis that tests a hypothesis or confirms patterns previously established.

Tick Marks

The increments of the scale that are listed on the vertical axis of a chart.

Pivot Table

A data processing tool in Excel used for summarizing and analyzing data.

Dashboard

A collection of visualizations and tables used to check business progress over time.

Scatterplot

A graph that uses dots to represent the values obtained for two different variables.

Correlation Coefficient

A statistical measure that describes the strength and direction of a relationship between two variables.

Box Plot

A graphical representation that summarizes data using the median, quartiles, and possible outliers.

Filled Map

A map that represents data values by filling geographic areas with colors.

Word Cloud

A visual representation of text data, where the size of each word indicates its frequency or importance.

Interactive Dashboard

A dashboard that allows users to interact with the data, filtering and drilling down into specific areas.

Time Series

A series of data points indexed in time order.