Practice Test Geeks(BKSB) Basic and Key Skills Builder Practice Test
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Handling Data and Statistics Flashcards

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

Read the first 7 Handling Data and Statistics flashcards as text

  1. A shop records daily sales (in $): 120, 85, 200, 95, 150, 85, 130. What is the mode?

    Answer: 85

    The mode is the most frequently occurring value; 85 appears twice, all others once.

  2. A scatter diagram shows a strong positive correlation. Which statement best describes this?

    Answer: As x increases, y increases

    A positive correlation means both variables increase together.

  3. A grouped frequency table shows 15 values in the 10–20 interval and 25 values in the 20–30 interval. What is the total number of values in these two groups?

    Answer: 40

    Total = 15 + 25 = 40 values.

  4. The mean of five numbers is 14. Four of the numbers are 10, 12, 16, and 18. What is the fifth number?

    Answer: 14

    Total sum = 5 × 14 = 70; known sum = 10+12+16+18 = 56; fifth number = 70 − 56 = 14.

  5. A two-way table shows 30 boys and 20 girls in Year 10, and 25 boys and 35 girls in Year 11. How many students are in Year 11?

    Answer: 60

    Year 11 total = 25 boys + 35 girls = 60 students.

  6. Which measure of average is most affected by an extreme outlier value?

    Answer: Mean

    The mean is calculated using all values, so a very high or low outlier significantly shifts it.

  7. A line graph shows temperatures at 6 AM, 9 AM, 12 PM, and 3 PM as 8°C, 12°C, 18°C, and 15°C. What was the temperature rise from 6 AM to 12 PM?

    Answer: 10°C

    Rise = 18°C − 8°C = 10°C.