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Data Visualization Types
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Bar Chart
Used to compare quantity across different categories; best when categories are discrete and not too many.
Line Graph
Displays data points over a continuous interval or time span; best for showing trends and changes over time.
Pie Chart
Shows the proportion or percentage each category represents of the total; best for illustrating part-to-whole relationships with a few categories.
Histogram
Visualizes the distribution of numerical data; best used when the data is continuous and you're interested in the frequency of values within intervals.
Scatter Plot
Shows the relationship between two quantitative variables; best for identifying correlations or patterns.
Heat Map
Represent data values using color coding; best for comparing data across multiple categories or through spatial data.
Area Chart
Emphasizes the magnitude of change over time; best for showing volume beneath a line chart, illustrating cumulative totals.
Box Plot
Displays the distribution of a data set based on a five-number summary; best for detecting outliers and understanding the spread of data.
Bubble Chart
A type of scatter plot that represents three dimensions of data; best used when the data set contains three quantitative and one to two categorical variables.
Stacked Bar Chart
Indicates how different parts contribute to a total; best when you want to show the total size along with the composition of the categories.
Gantt Chart
Used for scheduling and to show the progress of multiple tasks over time; best for project management.
Treemap
Shows hierarchical data as nested rectangles; best for space-efficient display of hierarchical data and relative sizes.
Waterfall Chart
Visualizes cumulative effect of sequentially introduced values; best for understanding the stepwise impact of different contributing factors.
Dot Plot
Displays frequency using dots; best for small to moderate sets of data where precise values for each category are needed.
Spider or Radar Chart
Displays multivariate data as a two-dimensional chart; best used to plot one or more groups or variables that have three or more variables.
Waffle Chart
Utilizes a 10x10 grid to show percentages; best for visualizing parts of a whole with one or very few categories for quick comparisons.
Streamgraph
A type of stacked area chart that is displaced around a central axis, often used to show changes in data over time; best for displaying high-volume datasets with long time periods.
Violin Plot
Combines a box plot with a kernel density plot; best for comparing the distribution of data across several groups.
Choropleth Map
A thematic map where geographic regions are colored or shaded in relation to a data variable; best for showing how a measurement varies across a geographic area.
Sankey Diagram
Visualizes the flow of data between different nodes; best for showing the distribution and conservation in a system.
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