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Q. How many ways can you choose 3 items from a set of 5?

Solution

The number of ways to choose 3 items from 5 is calculated using combinations: C(5,3) = 5! / (3!(5-3)!) = 10.

Correct Answer: A — 10

Q. If a coin is flipped three times, what is the probability of getting exactly two heads?

Solution

The probability of getting exactly 2 heads in 3 flips is calculated using the binomial formula: C(3,2) * (1/2)^2 * (1/2)^1 = 3/8.

Correct Answer: A — 3/8

Q. What is the mode of the data set: 2, 3, 4, 4, 5, 5, 5, 6?

Solution

The mode is the value that appears most frequently, which is 5.

Correct Answer: C — 5

Q. Which measure of central tendency is most affected by extreme values?

Solution

The mean is most affected by extreme values because it takes all values into account.

Correct Answer: A — Mean

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