DA0-002 Visualization and Reporting Practice Question
Exhibit
chart: {
type: 'line',
data: {
labels: ['Q1','Q2','Q3','Q4'],
datasets: [{
label: 'Sales',
data: [100,200,150,300]
}]
},
options: {
scales: {
y: {
beginAtZero: false
}
}
}
}Refer to the exhibit. A stakeholder complains that the line chart exaggerates the changes in sales. What is the most likely cause?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The y-axis does not start at zero
Setting beginAtZero to false truncates the y-axis, making small changes appear larger.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
The y-axis does not start at zero
Why this is correct
Starting at a non-zero value exaggerates differences.
- ✗
There are too few data points
Why it's wrong here
Number of points is fine; the issue is axis scaling.
- ✗
The data labels are incorrect
Why it's wrong here
Labels appear correct for the quarters.
- ✗
The chart type should be a bar chart
Why it's wrong here
Bar chart would also suffer from the same axis issue.
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Written by Johnson Ajibi, MSc IT Security
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