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Statistics & Data Interpretation Flashcards

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

Read the first 6 Statistics & Data Interpretation flashcards as text

  1. The mean of 5 observations is 10. If one observation of value 8 is added, what is the new mean?

    Answer: 9.67

    Old sum = 5×10=50; new sum = 50+8=58; new mean = 58/6 ≈ 9.67.

  2. A pie chart shows that 25% of expenses are on food. If total expenses are Rs. 12,000, how much is spent on food?

    Answer: Rs. 3,000

    Food expenditure = 25% of 12,000 = 0.25 × 12,000 = Rs. 3,000.

  3. The mode of the data set {3, 5, 3, 7, 5, 3, 8} is:

    Answer: 3

    Mode is the most frequently occurring value; 3 appears three times, more than any other value.

  4. In a bar graph, the sales for Jan, Feb, Mar, Apr are 40, 60, 50, 70 units respectively. What is the total sales for the quarter Jan-Mar?

    Answer: 150

    Total sales for Jan-Mar = 40 + 60 + 50 = 150 units.

  5. What is the median of: 4, 7, 2, 9, 1, 5, 8?

    Answer: 5

    Sorted: 1,2,4,5,7,8,9; median is the middle value (4th of 7) = 5.

  6. A line graph shows production (in tonnes): 2018=200, 2019=250, 2020=300. What is the percentage increase from 2018 to 2020?

    Answer: 50%

    Percentage increase = (300-200)/200 × 100 = 100/200 × 100 = 50%.