Statistics

A coin is tossed 3 times. What is the probability of getting exactly one head?

What is the probability of getting a 5 on at least one die when two dice are thrown?

The median of first 50 natural numbers is:

If mode = 80 and mean = 110, then median is:

Mean of 100 observations is 50. If one observation 50 is replaced by 150, the new mean is:

Which of these is the most frequent value?

Find the mean of prime numbers between 10 and 20.

Median of data 1, 3, 9, 11, 2 is:

The relationship Mode = 3 Median - 2 Mean holds for:

The mean of x-2a, x-a, x, x+a, x+2a is:

If the mean of a distribution is 25 and the coefficient of variation is 20%, the standard deviation is:

What is the mode of 5, 5, 5, 5, 5?

The median of the data 13, 15, 16, 17, 19, 20 is:

Find the mean of first five odd prime numbers.

If $x_1, x_2...x_n$ are observations such that $\sum (x_i - 2) = 20$ and $\sum (x_i - 5) = -10$, then $n$ is:

Which measure is best for 'salary' distributions which are often skewed?

The class mark (mid-value) of 10-20 is:

Mean of $n$ observations is $\bar{x}$. If each is divided by 10, the new mean is:

If the mean of 6, 8, 5, 7, x and 4 is 7, then x is:

In a symmetric distribution, Mean - Median = ?