SSC CGL Tier-2 14th September 2018 Statistics
For the following questions answer them individually
For the given figures of production of a sugar factory, the estimate of the production for 1976 using straight line trend with origin at the year 1972 by the least squares method $$\left(\sum x = 0, \sum x^2 = 28, \sum xy = 56\right)$$ is:
Which of the following methods is NOT used in computation of a seasonalindexfor time series?
The second and fourth moment about mean for a distribution are 4 and 18 respectively. What is the value of Pearson’s coefficient of skewness $$\beta_2$$
For the study purpose, the mean ofthe observations is 148 gm andstandard deviation is 17.4 gm. Approximately, the coefficient of variation equals to:
Five persons A, B, C, D and E occupy seats in a row at random. The probability that A and B sit next to each other is:
A Poisson distribution has a double mode at x = 1 and x = 2. The probability for x = 1 or for x = 2 of these two values is:
