Visualising Data

Which chart type is best suited for comparing sales performance across different months?

• Radar Chart
• Pie Chart
• Line Chart
• Scatter Plot

Answer explanation

Line charts are ideal for showing trends over time, making them suitable for comparing sales performance across different months.

A bar chart is suitable for displaying the distribution of a single continuous variable

• Yes
• No

Answer explanation

Bar charts are typically used for comparing data across categories or showing the relationship between a categorical variable and a numerical variable. They are not suitable for displaying the distribution of a single continuous variable.

Which chart type is recommended for displaying the percentage contribution of each category to the total?

• Radar Chart
• Pie Chart
• Histogram
• Scatter Plot

Answer explanation

Pie charts are effective for showing the proportion or percentage of each category relative to the whole.

Line charts are suitable for comparing discrete categories​

• Yes
• No

Answer explanation

Line charts are best suited for showing trends over time or continuous data. They are not ideal for comparing discrete categories

Which chart type is recommended for comparing the performance of multiple entities across multiple criteria simultaneously?

• Column Chart
• Radar Chart
• Scatter Plot
• Area Chart

Answer explanation

Radar charts are ideal for comparing multiple quantitative variables across categories simultaneously, making them suitable for performance evaluations and comparison.

Combination charts allow for comparing data of different scales in one chart.​ ​

• Yes
• No

Answer explanation

Combination charts combine different chart types (e.g., line and column charts) in a single chart, allowing for comparing data of different scales effectively.

When is a pie chart not an ideal choice for visualising data?

• When the number of categories is small
• When precise values need to be compared.
• When showing the distribution of a single continuous variable.
• All of the above

Answer explanation

While pie charts have their advantages, they are not suitable when the number of categories is small, when precise values need to be compared, or when showing the distribution of a single continuous variable.

Scatter plots are useful for identifying correlations between two continuous variables.​

• Yes
• No

Answer explanation

Scatter plots are effective for visualising the relationship between two continuous variables and identifying correlations or trends.