SSC CGL Tier 2 28th January 2022 Statistics

If a random sample of size n is drawn without replacement from a finite population of size N ,the correction factor for standard error of sample mean is:

The observed value $$x$$ = 13.7 belongs to which quartile if continuous random variable X follows a uniform distribution with a = 5 and b = 22?

The workers at a large manufacturing company can earn monthly bonuses. The distribution of monthly bonuses earned by all workers last year has a mean of 2.3 and a standard deviation 1.3. Let Z represent the standard normal distribution. If X represents the mean of monthly bonuses earned last year for a random sample of 40 workers. which of the following gives the approximate probability that X is less than 2?

The multiplicative model of the time series is:

The geometric mean for the data set having negative observations:

For ten students, the Spearman's rank correlation coefficient between scores in two different subjects is - 0.3. The value of the sum of the square of the difference of ranks is:

What two pieces of information are needed at given level of significance for the determination of the critical value for testing whether the test statistic of ANOVA is statistically significant?

Which distribution has the same mean and variance?

The profit of a company during the first five months of a year is ₹Ninety-six lakhs per month and during the last seven months is ₹120 lakhs per month. The average profit per month during the whole year is:

_________ is a plot of a sequence of observations made over time.