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Data Interpretation and Graphs Flashcards

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

Read the first 7 Data Interpretation and Graphs flashcards as text

  1. A line graph shows plant growth: Week1=2cm, Week2=5cm, Week3=9cm, Week4=14cm. What is the pattern of growth?

    Answer: The plant grows more each week

    Growth per week increases: +3, +4, +5 cm, showing an accelerating pattern.

  2. A tally chart shows: Dogs=IIII II, Cats=IIII I, Birds=III. How many more dogs than birds are there?

    Answer: 4

    Dogs=7, Birds=3; 7 − 3 = 4 more dogs.

  3. A graph shows the number of books read by students: Min=2, Q1=5, Median=8, Q3=11, Max=15. What is the interquartile range (IQR)?

    Answer: 6

    IQR = Q3 − Q1 = 11 − 5 = 6.

  4. A bar graph compares the number of books sold each month. March sold 120 books and April sold 90. By what percent did sales decrease from March to April?

    Answer: 25%

    (120 − 90) ÷ 120 × 100 = 30 ÷ 120 × 100 = 25%.

  5. A graph shows that as the price of a product increases, the number of items sold decreases. This is an example of:

    Answer: Negative correlation

    When one variable increases and the other decreases, that is a negative correlation.

  6. A pictograph shows: Monday=3 stars, Tuesday=5 stars, Wednesday=4 stars. Each star = 10 items sold. How many total items were sold across all three days?

    Answer: 120

    (3+5+4) × 10 = 12 × 10 = 120 items.

  7. A table shows the number of students in four classes: Class A=28, Class B=32, Class C=25, Class D=31. Which measure best represents the typical class size?

    Answer: The mean

    The mean (average) best represents a typical value in a data set.