CSE
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Practice Exams

Data Interpretation Reviewer (Professional)

Reviewer's Note: Accuracy over speed! Check the units on the axes (thousands vs millions) and read the legend carefully. Most mistakes come from misreading the chart, not from the math.

Data Interpretation (DI) tests your ability to extract information from visual formats.

Sa madaling salita: Ito ay tungkol sa pag-unawa sa mga graphs, tables, at charts. Ang pinaka-importante rito ay ang mapansin ang maliliit na detalye tulad ng "legend" o "units".

Common Data Formats

Visualizing data helps in comparing values and identifying trends efficiently.

  1. Tables: Data organized in rows and columns. (Mga numero sa loob ng cells.)
  2. Bar Graphs: Used to compare categories. (Ginagamit sa paghahambing.)
  3. Pie Charts: Parts of a whole. (Bilog na nagpapakita ng porsyento.)
  4. Line Graphs: Trends over time. (Pataas o pababang linya.)

Strategy for Solving

  1. Read the Title: (Ano ang topic ng graph?)
  2. Examine the Legend: (Anong ibig sabihin ng mga kulay o pattern?)
  3. Understand the Axes: (Ano ang xx-axis o horizontal at yy-axis o vertical?)
  4. Pinpoint Information: Don't read everything. Look only for what is asked. (Hanapin lang ang kailangan para sa tanong.)
  5. Calculations: DI usually requires averages or percentage change. (Madalas ay Average o Percentage Increase/Decrease ang tinatanong.)

Key Formulas for DI

  • Percentage Change: New−OldOld×100\frac{\text{New} - \text{Old}}{\text{Old}} \times 100
  • Average: SumCount\frac{\text{Sum}}{\text{Count}}
  • Ratio: Comparison (e.g., A:BA:B)

Practice Questions

Set A: Table - Fruit Sales (in kg)

Month Apples Bananas Oranges
January 50 100 75
February 60 80 90
March 90 120 100

  1. What is the total sales of Apples from January to March?

    • A. 150 kg
    • B. 180 kg
    • C. 200 kg
    • D. 210 kg
    • Answer: C (200 kg).
    • Hack (Ibig sabihin): 50+60+90=20050 + 60 + 90 = 200.

  2. What is the percentage increase in Apple sales from January to February?

    • A. 10%
    • B. 15%
    • C. 20%
    • D. 25%
    • Answer: C (20%).
    • Hack (Ibig sabihin): Diff = 60−50=1060 - 50 = 10. Percent = 10/50=0.2010 / 50 = 0.20.

  3. Which month had the highest total fruit sales?

    • A. January
    • B. February
    • C. March
    • D. April
    • Answer: C (March).
    • Hack (Ibig sabihin): Jan (225), Feb (230), March (310).

  4. What is the ratio of Oranges sold in Jan to Oranges sold in March?

    • A. 3:4
    • B. 4:3
    • C. 2:3
    • D. 3:5
    • Answer: A (3:4).
    • Hack (Ibig sabihin): 75:10075 : 100. Divide both by 25.

  5. What is the average monthly sales of Bananas?

    • A. 90
    • B. 100
    • C. 110
    • D. 120
    • Answer: B (100).
    • Hack (Ibig sabihin): (100+80+120)/3=300/3=100(100+80+120) / 3 = 300 / 3 = 100.

Set B: Pie Chart - Expenses (Total Income: P20,000)

  • Food: 40%
  • Rent: 30%
  • Savings: 20%
  • Utilities: 10%

  1. How much is spent on Food?

    • A. P6,000
    • B. P8,000
    • C. P10,000
    • D. P4,000
    • Answer: B (P8,000).
    • Hack (Ibig sabihin): 0.40×20,000=8,0000.40 \times 20,000 = 8,000.

  2. How much more is spent on Rent than Savings?

    • A. P1,000
    • B. P2,000
    • C. P3,000
    • D. P4,000
    • Answer: B (P2,000).
    • Hack (Ibig sabihin): Diff is 30%−20%=10%30\% - 20\% = 10\%. 10%10\% of 20,000=2,00020,000 = 2,000.

  3. What is the combined percentage of Savings and Utilities?

    • A. 20%
    • B. 30%
    • C. 40%
    • D. 50%
    • Answer: B (30%).
    • Hack (Ibig sabihin): 20+10=3020 + 10 = 30.

  4. If income increases to P30,000, how much will be allocated to Savings (same rate)?

    • A. P4,000
    • B. P5,000
    • C. P6,000
    • D. P7,000
    • Answer: C (P6,000).
    • Hack (Ibig sabihin): 0.20×30,000=6,0000.20 \times 30,000 = 6,000.

  5. Which expense is exactly half of the Savings?

    • A. Food
    • B. Rent
    • C. Utilities
    • D. None
    • Answer: C (Utilities).
    • Hack (Ibig sabihin): Savings is 20%. Utilities is 10%.

Set C: Line Graph - Company Profit (in Millions)

  • 2020: 10M
  • 2021: 15M
  • 2022: 12M
  • 2023: 18M
  • 2024: 25M

  1. In which year did the profit decrease?

    • A. 2021
    • B. 2022
    • C. 2023
    • D. 2024
    • Answer: B (2022).
    • Hack (Ibig sabihin): From 15M (2021) down to 12M (2022).

  2. What was the profit increase from 2020 to 2021?

    • A. 2M
    • B. 3M
    • C. 5M
    • D. 10M
    • Answer: C (5M).
    • Hack (Ibig sabihin): 15−10=515 - 10 = 5.

  3. What is the average profit over the 5 years?

    • A. 14M
    • B. 15M
    • C. 16M
    • D. 18M
    • Answer: C (16M).
    • Hack (Ibig sabihin): (10+15+12+18+25)/5=80/5=16(10+15+12+18+25) / 5 = 80 / 5 = 16.

  4. The profit in 2024 is how many times the profit in 2020?

    • A. 1.5x
    • B. 2.0x
    • C. 2.5x
    • D. 3.0x
    • Answer: C (2.5x).
    • Hack (Ibig sabihin): 25/10=2.525 / 10 = 2.5.

  5. If profit is expected to grow by 10% in 2025, what will it be?

    • A. 26.5M
    • B. 27.0M
    • C. 27.5M
    • D. 28.0M
    • Answer: C (27.5M).
    • Hack (Ibig sabihin): 10%10\% of 25=2.525 = 2.5. 25+2.5=27.525 + 2.5 = 27.5.

Tip: Data Interpretation takes time. Practice reading charts quickly! (Sanayin ang mata sa mabilis na pagbabasa ng charts.)