Unit 2 - DDE

What is the primary purpose of data visualization?

• To represent data visually for easier understanding

• To store data securely

• To analyze data mathematically

• To collect data from various sources

Which principle of effective data visualization emphasizes avoiding unnecessary details?

• Efficiency

• Clarity

• Accuracy

• Aesthetics

What type of chart is ideal for comparing quantities across different categories?

• Pie Chart

• Scatter Plot

• Bar Chart

• Line Chart

Which visualization type is best for showing trends over time?

• Box Plot

• Line Chart

• Histogram

• Dashboard

What is a key characteristic of pie charts?

• They show relationships between two variables.

• They display proportions of a whole.

• They summarize a data set's distribution.

• They are used for time series data.

Which tool is known for its robust data analysis and visualization features and integrates with Microsoft products?

• R

• Tableau

• Google Data Studio

• Power BI

What is the purpose of data validation?

• To analyze data trends

• To collect data from users

• To ensure data correctness and consistency

• To visualize data effectively

What type of validation checks the format and structure of data?

• Manual Validation

• Automated Validation

• Semantic Validation

• Syntactic Validation

Which of the following is a manual validation method?

• Software Tools

• Spot Checks

• Scripts

• Range Checks

What is a common pitfall to avoid in data visualization?

• Misleading scales

• Using interactive elements

• Choosing the right type of visualization

• Using colorblind-friendly palettes