SSC CGL Tier-2 10th August 2022 Statistics

Instructions

For the following questions answer them individually

Question 71

For the frequency distribution of income (in lakh) of the employees in factory


the value of mode is

Video Solution
Question 72

These seventh decile ($$D_{7}$$) of data set 4, 3, 10, 9, 1 is

Video Solution
Question 73

For the distribution


the third factorial moment is

Video Solution
Question 74

If the difference between the rank of the 4 observations are 2.5, 0.5, -1.5, -1.5, then Spearman's rank correlation coefficient equals to:

Video Solution
Question 75

$$X_{1}$$ and $$X_{2}$$ represent number of occurrences of event A and 8 that follow Poisson distribution with mean rate $$\lambda_{1}$$ and $$\lambda_{2}$$, If $$Y_{1}$$ and $$Y_{2}$$ are inter-occurrence times of event A and B, then min($$Y_{1},Y_{2}$$) follows

Video Solution
Question 76

For the distribution with unknow $$\theta$$
$$f(x, \theta) = \begin{cases}\frac{1}{\theta}; & 0 \leq x \leq \theta\\0, & elsewhere\end{cases}$$

We set the testing of hypothesis $$H_{0} : \theta = 1 \ vs \ H_{1} : \theta = 2$$. When the critical region $$X \geq 0.4$$, the value of probability of type-II error is:

Video Solution
Question 77

For the production data


the third 3-year simple moving average is:

Video Solution
Question 78

The grouped data for the observations are


The population skewness

Video Solution
Question 79

For the data set


the regression coefficient $$b_{xy}$$ (y on $$x$$) equals to:

Video Solution
Question 80

The value of a and b so that the following is probability mass function


with mean 1.1, is:

Video Solution
cracku

Boost your Prep!

Download App