Data Insights: Graphics Interpretation Flashcards

A grouped bar chart compares male and female scores across four subjects. To find the largest gender gap, you compare:

Answer: The height difference between paired bars in each group

The largest gap is where the paired male and female bars differ most in height.

An area chart shows the region under a line filled in. The filled area is typically used to emphasize:

Answer: Cumulative volume or magnitude over time

Area charts emphasize total magnitude or volume accumulated across the x-axis.

A graph shows sales index where 2020 = 100 and 2025 = 130. This means 2025 sales were:

Answer: 30% higher than 2020

An index of 130 against a base of 100 means a 30% increase over the base year.

A scatter plot shows no discernible pattern, with points spread randomly. The correlation coefficient is closest to:

Answer: 0

A random scatter with no pattern corresponds to a correlation near zero.

A waterfall chart starts at 100, shows +40, then -30, then -20. The final value is:

Answer: 90

Starting at 100, adding 40 then subtracting 30 and 20 yields 90.

A bar chart shows units sold but a question asks about revenue. You cannot answer unless you also know each product's:

Answer: Price per unit

Revenue requires units multiplied by price, so price per unit is needed.

A line graph projects future values with a dashed segment beyond actual data. The dashed portion represents:

Answer: A forecast or estimate

Dashed lines extending past observed data typically denote forecasted or estimated values.