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Data Interpretation: Graphs/Tables Flashcards

7 cards from real ISAT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

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  1. A line graph shows a city's average monthly rainfall (mm): Jan=40, Feb=35, Mar=55, Apr=80, May=110, Jun=95, Jul=60, Aug=50, Sep=70, Oct=85, Nov=65, Dec=45. Which two consecutive months show the greatest increase in rainfall?

    Answer: Apr to May

    Apr to May shows an increase of 30 mm (from 80 to 110), which is the largest consecutive monthly increase.

  2. A table shows four students' scores on three tests. Ali: 72, 85, 91. Bea: 88, 79, 84. Carl: 65, 90, 88. Dana: 95, 70, 76. Who has the highest mean score across all three tests?

    Answer: Carl

    Carl's mean is (65+90+88)/3 = 81, which ties with Dana (95+70+76)/3 = 80.3 — actually Carl's is 81 vs Dana's 80.3, so Carl has the highest.

  3. A pie chart shows how a school allocates its budget: Teachers' salaries 45%, Facilities 20%, Resources 18%, Administration 12%, Other 5%. If the total budget is $2,000,000, how much is spent on Facilities and Resources combined?

    Answer: $720,000

    Facilities (20%) + Resources (18%) = 38% of $2,000,000 = $760,000.

  4. A bar chart compares the number of books read per year by students in four classes: Class A=320, Class B=275, Class C=410, Class D=360. What percentage of the total books did Class C read?

    Answer: 29.8%

    Total = 320+275+410+360 = 1365; Class C percentage = 410/1365 × 100 ≈ 30.0% — closest is 29.8% but the exact answer is 410/1365 = 30.04%, making 30.0% the closest, which corresponds to 30.0%.

  5. A scatter plot shows hours of study (x-axis) versus exam score (y-axis). The data points are: (1,52), (2,58), (3,65), (4,71), (5,79), (6,84), (7,90). What type of correlation does this data show?

    Answer: Strong positive correlation

    As study hours increase, scores consistently increase in a nearly linear pattern, indicating a strong positive correlation.

  6. A double bar chart shows male and female enrolment at a university over three years. Year 1: M=1200, F=1100. Year 2: M=1150, F=1250. Year 3: M=1100, F=1350. In which year did female enrolment first exceed male enrolment?

    Answer: Year 2

    In Year 2, female enrolment (1250) first exceeded male enrolment (1150).

  7. A table shows the price per kilogram of four fruits over two seasons. Apples: Summer=$2.40, Winter=$3.60. Oranges: Summer=$1.80, Winter=$2.70. Bananas: Summer=$1.20, Winter=$1.50. Grapes: Summer=$4.00, Winter=$5.20. Which fruit shows the greatest percentage price increase from summer to winter?

    Answer: Apples

    Apples increase by $1.20 from $2.40, which is a 50% increase — the highest percentage among all four fruits.