STAT Analysis of Tables and Charts 3

Question 1

A table shows population data: Town A increased from 12,000 to 15,000 over 5 years, while Town B increased from 8,000 to 11,200. Which town had the greater percentage increase?

Accepted Answer

Town B, with 40%

Answer

Town A: (3,000/12,000)×100 = 25%; Town B: (3,200/8,000)×100 = 40%, so Town B had the greater percentage increase.

Question 2

A line graph has two lines: Line P rises consistently, Line Q falls consistently. They intersect once. What does the intersection point represent?

Accepted Answer

The point where both variables have equal values

Answer

An intersection point on a graph represents where the two lines have the same value at the same x-coordinate.

Question 3

A stacked bar chart shows total revenue of $100K split between Product X and Product Y across three years. In Year 1, X=$60K and Y=$40K; in Year 3, X=$40K and Y=$60K. What changed?

Accepted Answer

Product Y became the dominant revenue source

Answer

Product Y's share grew from 40% to 60% of equal total revenue, making it the dominant source in Year 3.

Question 4

A histogram has bars of heights 3, 7, 12, 9, 4 for intervals 0-9, 10-19, 20-29, 30-39, 40-49. The distribution is best described as:

Accepted Answer

Approximately bell-shaped with a peak in the middle

Answer

The frequencies rise to a peak in the middle interval (20-29) and fall on both sides, forming an approximately bell-shaped (unimodal) distribution.

Question 5

A table lists monthly expenses: Rent $1,200, Food $400, Transport $150, Entertainment $250, Savings $500. What fraction of total expenses is spent on food and entertainment combined?

Accepted Answer

1/4

Answer

Total = $2,500; Food + Entertainment = $650; 650/2,500 = 13/50, which simplifies to approximately 1/4 (0.26).

STAT - Special Tertiary Admissions Test Practice Test

STAT - Special Tertiary Admissions Test Practice Test

STAT Analysis of Tables and Charts 3