Assignment 2 - Visualization Critique

Case 1 - 3D Bar Chart on CpG Island Hypermethylation Profiles
3D Bar Chart

Critical Analysis

Data Issues:

Interpretation Challenges: The 3D effect distorts bar heights, making comparisons difficult.

Visual Overload: Too much data with minimal differentiation leads to clutter.

Idiom Issues:

Distorted Comparisons: 3D perspective skews data interpretation.

Unreadable Labels: Angled axis labels and grid lines hinder readability.

Suggested Improvements

Use 2D Visualization: A 2D bar chart or heatmap will improve clarity.

Simplify Colors: Limiting color variety will reduce visual complexity.

Enhance Labels: Clear, aligned labels will make the data easier to interpret.

Case 2 - Customer Support Activity Stacked Bar Chart with Line Graph Overlay
Customer Support Activity Chart

Critical Analysis

Data Issues:

Overlapping Data Types: Combining issues by number and days open in a stacked bar with a line overlay complicates interpretation.

Inconsistent Scales: Mixing scales on the y-axis for issues and days open risks confusion.

Idiom Issues:

Visual Overload: Stacked bars with an overlay line chart reduce readability.

Color Confusion: Excessive colors make categories hard to distinguish, especially for color-deficient viewers.

Suggested Improvements

Separate Metrics: Splitting the metrics into separate charts would improve clarity.

Clear Grouping: Using a grouped bar chart would make comparisons between categories easier.

Simplify Colors: Limiting to a few distinct colors would enhance clarity.