NBT Data Interpretation & Analysis 2

Question 1

A table shows the pass rates of five faculties: Science 72%, Humanities 68%, Commerce 80%, Law 65%, Engineering 75%. Which faculty has the highest pass rate?

Accepted Answer

Commerce

Answer

Commerce has the highest pass rate at 80%, which is greater than all other faculties listed.

Question 2

A dataset is: 4, 8, 6, 5, 3, 9, 7. What is the mean?

Accepted Answer

6

Answer

Sum: 4+8+6+5+3+9+7 = 42. Mean: 42 ÷ 7 = 6.

Question 3

A double bar graph compares male and female enrolments across 3 years. In 2023, Male = 1,200, Female = 1,500. What fraction of 2023 total enrolment were female students?

Accepted Answer

3/7

Answer

Total 2023: 1,200 + 1,500 = 2,700. Female fraction: 1,500/2,700 = 5/9. That is index 2. Correcting: 5/9 is index 2.

Question 4

A graph shows that from 2018 to 2022 the number of university graduates increased from 15,000 to 21,000. What is the percentage increase?

Accepted Answer

40%

Answer

Increase: 6,000. Rate: (6,000 ÷ 15,000) × 100 = 40%.

Question 5

A researcher collects data from 50 students, 10 teachers, and 5 principals on their views about online learning. What potential issue exists with this sample?

Accepted Answer

The sample is not representative due to unequal group sizes

Answer

The heavy imbalance in group sizes (50 students vs. 5 principals) means the overall results will be dominated by student responses, not providing a balanced view across all stakeholder groups.

(NBT) National Benchmark Test Practice Test

(NBT) National Benchmark Test Practice Test

NBT Data Interpretation & Analysis 2