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

The range of the data {15, 22, 8, 31, 19, 27} is:
Answer: 23
Range = Maximum − Minimum = 31 − 8 = 23.
A table shows that Company A's revenue is Rs. 500 crore and Company B's is Rs. 300 crore. What fraction of total revenue belongs to Company B?
Answer: 3/8
Total = 500+300 = 800; Company B's fraction = 300/800 = 3/8.
If the probability of an event occurring is 0.35, what is the probability of it NOT occurring?
Answer: 0.65
Probability of not occurring = 1 − 0.35 = 0.65.
The arithmetic mean of 10 numbers is 45. If each number is increased by 5, what is the new mean?
Answer: 50
When a constant is added to all values, the mean also increases by that constant: 45+5=50.
In a survey of 200 people, 120 prefer tea and 80 prefer coffee. What percentage prefers coffee?
Answer: 40%
Coffee preference = 80/200 × 100 = 40%.
A bar chart shows expenses over 4 months: Jan=Rs.500, Feb=Rs.700, Mar=Rs.600, Apr=Rs.800. What is the average monthly expense?
Answer: Rs. 625
Average = (500+700+600+800)/4 = 2600/4 = Rs. 650.