Examination Preparation

Data Interpretation Quiz

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Use the data table provided below to answer questions 1 through 3. This mimics the standard format of a UGC NET DI problem block.

Number of Students Enrolled in Different Courses (2018–2021)
Year B.A. B.Sc. B.Com. B.Tech.
2018 350 280 420 150
2019 370 300 440 180
2020 400 330 480 200
2021 420 360 510 220

1. What is the average number of students enrolled in the B.Sc. course over the four years?

  1. 317.5
  2. 320
  3. 310
  4. 325.5
View Answer & Explanation

Correct Answer: A

Explanation:
Total students in B.Sc. = 280 + 300 + 330 + 360 = 1270.
Average = 1270 ÷ 4 = 317.5.

2. What is the approximate percentage increase in B.Tech. enrollment from 2018 to 2021?

  1. 35%
  2. 40%
  3. 47%
  4. 52%
View Answer & Explanation

Correct Answer: C

Explanation:
Initial (2018) = 150. Final (2021) = 220.
Increase = 220 - 150 = 70.
Percentage Increase = \( (\frac{70}{150}) \times 100 \)
= \( \frac{7}{15} \times 100 \) ≈ 46.66% ≈ 47%.

3. What is the ratio of total students in 2018 across all courses to the total students in 2020 across all courses?

  1. 120 : 141
  2. 12 : 15
  3. 110 : 131
  4. 121 : 142
View Answer & Explanation

Correct Answer: A

Explanation:
Total for 2018 = 350 + 280 + 420 + 150 = 1200.
Total for 2020 = 400 + 330 + 480 + 200 = 1410.
Ratio = 1200 : 1410. Dividing both by 10 gives 120 : 141.

4. Which type of data classification represents categories with a natural ranking but no quantifiable exact difference between ranks (e.g., Letter grades A, B, C)?

  1. Nominal Data
  2. Ordinal Data
  3. Discrete Data
  4. Continuous Data
View Answer & Explanation

Correct Answer: B

Explanation: Ordinal data has an order or rank, but the intervals between the ranks are not standardized or equal.