SSC Statistics & Data Interpretation 2

Question 1

The range of the data {15, 22, 8, 31, 19, 27} is:

Accepted Answer

23

Answer

Range = Maximum − Minimum = 31 − 8 = 23.

Question 2

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?

Accepted Answer

3/8

Answer

Total = 500+300 = 800; Company B's fraction = 300/800 = 3/8.

Question 3

If the probability of an event occurring is 0.35, what is the probability of it NOT occurring?

Accepted Answer

0.65

Answer

Probability of not occurring = 1 − 0.35 = 0.65.

Question 4

The arithmetic mean of 10 numbers is 45. If each number is increased by 5, what is the new mean?

Accepted Answer

50

Answer

When a constant is added to all values, the mean also increases by that constant: 45+5=50.

Question 5

In a survey of 200 people, 120 prefer tea and 80 prefer coffee. What percentage prefers coffee?

Accepted Answer

40%

Answer

Coffee preference = 80/200 × 100 = 40%.

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