NBT Data Interpretation & Analysis 2

Question 1

A bar chart shows quarterly profits (in thousands): Q1 = $45k, Q2 = $60k, Q3 = $75k, Q4 = $30k. By what percentage did profit increase from Q1 to Q3?

Accepted Answer

67%

Answer

Percentage increase = (75 − 45) / 45 × 100 = 30/45 × 100 ≈ 67%.

Question 2

A school of 600 students has 45% in Grade 10 and 35% in Grade 11. The rest are in Grade 12. How many students are in Grade 12?

Accepted Answer

120

Answer

Grade 12 = 100% − 45% − 35% = 20% of 600 = 120 students.

Question 3

A pie chart shows monthly budget allocation: Transport 15%, Food 40%, Housing 30%, Entertainment 10%, Savings 5%. If monthly income is $4,000, how much is spent on housing?

Accepted Answer

$1,200

Answer

Housing = 30% × $4,000 = $1,200.

Question 4

A line graph shows noon temperatures (°F) for a 5-day week: Mon = 72, Tue = 75, Wed = 68, Thu = 80, Fri = 77. What is the range of temperatures recorded?

Accepted Answer

12°F

Answer

Range = maximum − minimum = 80 − 68 = 12°F.

Question 5

A bar graph shows test scores for 5 students: 78, 85, 92, 67, 88. A 6th student scores 90. What is the new mean score?

Accepted Answer

83.3

Answer

New mean = (78 + 85 + 92 + 67 + 88 + 90) / 6 = 500 / 6 ≈ 83.3.

(NBT) National Benchmark Test Practice Test

(NBT) National Benchmark Test Practice Test

NBT Data Interpretation & Analysis 2