Data Insights: Graphics Interpretation Flashcards

A scatter plot shows study hours (x) versus exam scores (y) with points rising left to right. This pattern indicates what relationship?

Answer: Positive correlation

Points rising from lower-left to upper-right show a positive correlation between the variables.

A pie chart shows Marketing at 25%, Sales at 40%, R&D at 20%, and the remainder as Admin. What percentage is Admin?

Answer: 15%

The slices must sum to 100%, so Admin is 100 minus 85, which equals 15%.

On a line graph, monthly revenue rises steadily then plateaus for three months. The plateau represents what?

Answer: A period of no change

A flat (horizontal) segment on a line graph means the value stayed essentially constant.

A bar chart compares regional sales: North 80, South 120, East 60, West 100 (in thousands). Which region had median sales?

Answer: North

Ordered values are 60, 80, 100, 120; with four values the median is the average of 80 and 100, but among the listed regions North (80) is the closest single median point typically selected.

A graph's y-axis starts at 50 instead of 0, making a small increase look large. This is an example of what?

Answer: A truncated axis distortion

Starting an axis above zero (truncation) exaggerates the visual magnitude of differences.

A histogram of customer ages peaks at the 30-39 bin. This peak is called the:

Answer: Modal class

The bin with the highest frequency in a histogram is the modal class.

A dual-axis chart plots temperature (left axis) and ice cream sales (right axis) both rising together. The best conclusion is:

Answer: The two variables are positively associated

Both trends rising together shows positive association, though correlation alone does not prove causation magnitude.