STAT Analysis of Tables and Charts 2

Question 1

A line graph shows sales rising from $20,000 in January to $50,000 in June, then falling to $35,000 by December. Which statement best describes the trend?

Accepted Answer

Sales peaked mid-year then declined but remained above the starting value

Answer

Sales peaked in June ($50K) then declined to $35K in December, which is still above the January starting point of $20K.

Question 2

A pie chart shows that Category A = 40%, Category B = 35%, Category C = 15%, and Category D = 10%. If the total is 200 units, how many units does Category B represent?

Accepted Answer

70 units

Answer

35% of 200 units = 0.35 × 200 = 70 units.

Question 3

A table shows test scores for four students: Alex 78, Beth 92, Carlos 85, Diana 61. What is the median score?

Accepted Answer

81.5

Answer

Ordered scores are 61, 78, 85, 92; the median of four values is the average of the two middle values: (78 + 85) / 2 = 81.5.

Question 4

A bar chart compares four cities' average rainfall. City W = 30mm, City X = 45mm, City Y = 20mm, City Z = 55mm. By approximately what percentage does City Z exceed City Y?

Accepted Answer

175%

Answer

City Z (55mm) is 175% of City Y (20mm): (55 / 20) × 100 = 275%, meaning it exceeds City Y by 175%.

Question 5

A scatter plot shows a cluster of points that slopes downward from left to right. What type of correlation does this indicate?

Accepted Answer

Negative correlation

Answer

A downward slope from left to right indicates a negative correlation, meaning as the x-variable increases, the y-variable decreases.

STAT - Special Tertiary Admissions Test Practice Test

STAT - Special Tertiary Admissions Test Practice Test

STAT Analysis of Tables and Charts 2