Data Analysis Basics

Which of the following is a primary purpose of data visualization?

• To make datasets look more complex

• To communicate information clearly and efficiently

• To increase the time it takes to interpret data

• To confuse the audience with misleading graphs

What type of graph is most appropriate for displaying the relationship between two quantitative variables?

• Pie chart

• Bar graph

• Line graph

• Scatter plot

Which data visualization technique would be best to show parts of a whole?

• Histogram

• Pie chart

• Line graph

• Scatter plot

What is the main advantage of using a line graph?

• It can display multiple categories of data simultaneously.

• It is useful for showing trends over time.

• It can show the relationship between any two variables.

• It is the best way to display parts of a whole.

When should you use a bar graph?

• When you want to show how a quantity varies across different categories

• When you are trying to display changes over continuous data

• When you need to show the correlation between two variables

• When you are comparing the parts of a whole

What is the purpose of using a histogram?

• To show changes over time

• To compare different categories

• To display the distribution of a quantitative variable

• To illustrate the relationship between two variables

Which of the following is true about pie charts?

• They are best for showing trends over time.

• They can effectively display distributions of large datasets.

• They are ideal for comparing parts of a whole.

• They are the most effective way to show correlations between variables.

In data visualization, what is the term for the visual element that represents the data?

• Data marker

• Data point

• Plot

• Chart element

Why is it important to choose the right scale for your data visualization?

• To ensure that the visualization fits on the page

• To make the visualization more colorful

• To accurately represent the data and avoid misleading the audience

• To use as many different colors as possible

What role does color play in data visualization?

• It is only used to make the graph look attractive.

• It can be used to differentiate data sets from each other.

• It has no specific role and is randomly chosen.

• It is used to confuse the reader.