SSC CGL Tier 2 28th January 2022 Statistics

Instructions

For the following questions answer them individually

SSC CGL Tier 2 28th January 2022 Statistics - Question 21


Which two of the following quantities are sample statistics?

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SSC CGL Tier 2 28th January 2022 Statistics - Question 22


'Linseed crops badly spoiled on account of rains' is an example of which option:

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SSC CGL Tier 2 28th January 2022 Statistics - Question 23


A sample of 30 latest, returns on UTI stock with unknown standard deviation reveals a mean return of $4. The estimated standard error of the sample means is 0.02. How much more of the sample (approximately) should be added to reduce the standard error of the sample mean to 0.01?

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SSC CGL Tier 2 28th January 2022 Statistics - Question 24


By the method of moving averages, the seasonal index for four quarters equals to:

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SSC CGL Tier 2 28th January 2022 Statistics - Question 25


The coefficient of mean deviation about median equals to:

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SSC CGL Tier 2 28th January 2022 Statistics - Question 26


If the Standard deviation of a data is 10 and Coefficient of Variation is 50, then the mean of the data is:

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SSC CGL Tier 2 28th January 2022 Statistics - Question 27


The lower quartile of $$f\left(x\right) = \frac{1}{12}\left(5-2x\right); -1 \leq x \leq 2$$ is one root of the quadratic equation:

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SSC CGL Tier 2 28th January 2022 Statistics - Question 28


Which variable type is required to be used more than once in factorial design?

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SSC CGL Tier 2 28th January 2022 Statistics - Question 29


The following measures were computed for a non-symmetrical frequency distribution: mean = 50, coefficient of variation = 35% and Karl Pearson's coefficient of skewness of first type= -0.25. The value of mode of the distribution is:

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SSC CGL Tier 2 28th January 2022 Statistics - Question 30


For the PDF $$f\left(x\right) = \frac{x}{4}; 1< x < 3$$, the $$50^{th}$$ percentile is:

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