data analysis quiz #2

Data Visualization

Presentation of information in graphical/visual formats

Data visualization offers:

Visual representation of complex data

Can aid in understanding, interpreting and decision-making the data

Visual Literacy

Ability to interpret understand and communicate the information

Data exploration

explore data, adjusting parameters and uncover hidden insight

comparative insights

enable comparison of different metrics and variables for comprehensive analysis and decision Making

Histogram

Representation of distribution

Column/bar chart

Represented vertically or horizontally uses categorical data and helps make comparisons

Pie chart

Used to view small amount of categories in numerical proportions

Highlights size in percent contribution

Line graph

Data points connected by straight line segments identifies trends, and variations

Scatter plot

Individual data points used to identify relationship between two variables

Correlation

The relationship between two variables

Measures strength and direction between two numerical variables

Correlation analysis

Used to discover if there is a relationship between deliverables and how strong the relationship is

Covariance

Variables are different or the same

Correlation coefficient

Measure of relationship between variables, positive one, negative one, zero