AP ICET 2017 Shift 2

If a > 1 and the median of the observations $$\frac{a}{5}, \frac{a}{4}, a, \frac{a}{2}$$ and $$\frac{a}{3}$$ is 8 then the arithmetic mean of the observation is

The mean deviation about the median of the observation 25, 34, 31, 23, 22, 26, 25, 22, 20 and 32

The mode of the distribution whose mean and medianare respectively 24.5 and 24.375 is

If $$\sigma$$ is the standard deviation of $$x_i(i = 1, 2, ... ... ..., n)$$ then the variation of $$5x_i + 3(i = 1, 2, 3, ... ... ..., n)$$ is

The observations $$x_i(i = 1, 2, ... ... ... ..., 15)$$ of an experiment it is given $$\sum_{i=1}^{15} x_i = 170$$ and $$\sum_{i=1}^{15} x_i^2 = 2830$$. Laterit is noticed that one x; is entered as 20 instead of the correct value 30. The correct value of their variance is

In the calculation of rank correlation coefficient (r) of 8 observations it is found that $$\sum d_{i}^{2} = 40.5$$. Where $$d_i$$ are the deviations. Then the value of r is

If A and B are two events of a random experiment suchthat the probability that at least one of A and B occuris 0,6 and the probability that both of them occuris 0.2 then $$p(\overline{A}) + p(\overline{B}) =$$

A numbern in chosenat randomfromthe set {1,2.3..........50}. The probability that $$\sqrt{n}$$ is an irrational number is

Two unbiased six-faced dice are thrown. The probability the sum on themis a prime, is

Let F be the set of all functions from the set A of 4 elements to the set B of 6 elements. The probability that f selected at randomfromF is an injection is