Data Visualization Quiz

What is the primary goal of data visualization?

• Collecting data

• Storing data efficiently

• Presenting data in a clear and understandable format

• Analyzing raw data

Which chart is best suited to show the composition of a whole?

• Line chart

• Pie chart

• Scatter plot

• Histogram

Which of the following is not a common tool for data visualization?

• Tableau

• Excel

• Python

• MySQL

What is the key characteristic of data?

• It is processed and understood

• It is objective

• It is subjective

• It is always meaningful

What distinguishes knowledge from data and information?

• Knowledge is always objective

• Knowledge is unprocessed

• Knowledge has meaning for a specific purpose

• Knowledge cannot be overloaded

What is the first step in data cleaning?

• Removing duplicates

• Creating charts

• Replacing missing data with random values

• Deleting all rows

Which Excel formula calculates the average of a range of cells?

• SUM

• AVERAGE

• COUNTIF

• VLOOKUP

Which formula would you use to count the number of times "P" appears in a range?

• =SUM(E2:E15)

• =AVERAGE(E2:E15)

• =COUNTIF(E2:E15, "P")

• =VLOOKUP("P", E2:E15, 1, 0

What type of chart is best for comparing values across categories?

• Pie chart

• Line graph

• Bar chart

• Scatter plot

Which chart type is most suitable for visualizing trends over time?

• Scatter plot

• Line graph

• Pie chart

• Bar chart