SSC CGL 2019 Tier-II (JSO) Previous Year Paper (17-Nov-2020)

Question 1

The arithematic average of Edgeworth - Marshal index number

Accepted Answer

Paasche's index nyumber and Laspeyre's index number

Answer

Kelly's index number and Walsh's index number

Answer

Paasche's index number and Fisher's index number

Answer

Laspeyre's index number and Fisher's index number

Question 2

The systematic (methodological) arrangement of the statistical data in columns or rows is called:

Accepted Answer

tabulation of the data

Answer

nature of the data

Answer

classification of the data

Answer

categorisation of the data

Question 3

The chance that a software engineer will debug an error X correctly is 80%. The chance that software with the error X will crash after the correct debugging is 30%. The chance of crash of the software by wrong debugging is 70%. A software with the error X crashed. The probability that its error was debugged correctly is:

Accepted Answer

$\dfrac{12}{19}$

Answer

$\dfrac{7}{12}$

Answer

$\dfrac{7}{19}$

Answer

$\dfrac{6}{19}$

Question 4

The first four raw moments of distribution are 2, 136, 320, and 40,000, The coefficient of skewness is:

Accepted Answer

$\dfrac{(-480)^2}{(132)^3}$

Answer

$\dfrac{40656}{(132)^2}$

Answer

$\dfrac{(40656)^2}{(132)^3}$

Answer

$\dfrac{-480}{(132)^2}$

Question 5

The coefficients of the regression &beta; X|y and &beta; Y|x , are known, The coefficient of correlation equals:

Accepted Answer

$\pm\sqrt{{\beta_{X|y}\beta_{Y|x}}}$

Answer

$\dfrac{1}{\beta_{X|y}\beta_{Y|x}}$

Answer

$\dfrac{2}{\dfrac{1}{\beta_{X|y}}+\dfrac{1}\beta_{Y|x}{}}$

Answer

$\dfrac{\beta_{X|y}+\beta_{Y|x}}{2}$

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