01
Choose one
1 point
A team wants to see whether electricity use changes across the months of a year. Which chart is the best fit?
Free Practice Quiz Question List
5 Data Visualization Online Quiz Questions
Use this free practice quiz with 20 questions to review 5 Data Visualization, test your knowledge, and prepare for your next test or exam.
20 questions
02
True or false
1 point
A bar chart compares counts across categories. Starting all bars at zero helps their lengths represent the values honestly. True or false?
- A
True
- B
False
03
Fill in the blank
1 point
A histogram groups numerical values into intervals called .
04
Written response
1 point
What chart type is used to examine how two numerical variables vary together, with one variable on each axis?
05
Choose one
1 point
A researcher uses box plots to compare exam scores in groups with very few students. What limitation should guide the researcher’s next step?
- A
It displays every individual observation, so a separate display is unnecessary.
- B
It is only useful for showing trends over time.
- C
It summarizes the distribution, so showing individual observations may help when the sample is small.
- D
It cannot be used to compare groups.
06
Choose all
1 point
A chart uses color to distinguish several categories. Which practices can make those distinctions clearer and more usable? Select all that apply.
- A
Use labels, shapes, or patterns in addition to color to distinguish groups.
- B
Use color as the only way to identify groups, provided the colors are bright.
- C
Choose distinct, high-contrast colors for categories.
- D
Use as many colors as possible so every mark looks different.
07
True or false
1 point
A line chart may use a cropped axis to show modest changes, provided the scale is clearly labeled and the effect of the choice is considered. True or false?
- A
True
- B
False
08
Fill in the blank
1 point
When a line chart shows change over time, put time on the horizontal axis in .
09
Written response
1 point
What statistical measure does the central line in a box plot represent?
10
Choose one
1 point
A designer wants a less visually heavy way to compare a small set of category values. Which chart is a suitable alternative to a bar chart?
- A
A dual-axis chart
- B
A dot plot
- C
A histogram
- D
A line chart
11
Choose all
1 point
Before choosing a chart for a dataset, which checks help establish what the values mean and whether the data are ready to use? Select all that apply.
- A
Confirm the units.
- B
Check for missing values.
- C
Choose decorative colors before reviewing the data.
- D
Check category labels and whether values are counts, rates, or percentages.
12
Choose one
1 point
A chart must support precise comparisons between values. Which visual properties are generally easiest for readers to judge?
- A
Volume and perspective
- B
Area and decorative shading
- C
Position and length
- D
Color intensity and shape complexity
13
Open ended
1 point
Two charts compare the same measure across two groups. The values are similar, but the charts use very different axis ranges, making the results look unlike each other. What should the designer change, and why?
14
Choose one
1 point
A city wants readers to see which of several libraries borrowed the most books. Which chart design best supports that comparison?
- A
A bar chart with libraries sorted by number of books borrowed
- B
A line chart connecting the libraries in alphabetical order
- C
A histogram grouping the libraries into numerical bins
- D
A scatter plot with each library represented by a point
15
Choose one
1 point
A teacher wants to inspect the distribution of exam scores and identify possible clusters or gaps. Which chart is the best fit?
- A
A bar chart with one bar for each student's name
- B
A histogram grouping scores into labeled intervals
- C
A line chart connecting scores in the order students took the exam
- D
A scatter plot comparing each score with its alphabetical rank
16
Choose one
1 point
A utility wants to show how electricity use changed from January through December. Which chart and horizontal-axis arrangement are most appropriate?
- A
A box plot with one box for each month
- B
A scatter plot with months arranged alphabetically
- C
A line chart with months in chronological order
- D
A histogram grouping months into score intervals
17
Choose one
1 point
A researcher needs to compare score distributions across three groups, each with only a few students. Which approach best supports group comparison while also showing the individual scores?
- A
Use box plots to compare the groups, and add individual observations because the groups are small.
- B
Use a line chart connecting the students’ scores within each group.
- C
Use a histogram because it displays every student’s individual score.
- D
Use bars of group averages because they show the spread of individual scores.
18
True or false
1 point
True or false: If a scatter plot shows that students who study more tend to have higher exam scores, the pattern by itself proves that studying more caused the higher scores.
- A
True
- B
False
19
Written response
1 point
A chart shows an unexpectedly high value. Name one kind of contextual reference that could help readers interpret it.
20
Written response
1 point
A line chart compares several series, and readers are having trouble identifying which line represents each one. What should the creator do?