SSC CGL Tier 2 28th January 2022 Statistics

Instructions

For the following questions answer them individually

Question 91

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:

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Question 92

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?

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Question 93

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?

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Question 94

The multiplicative model of the time series is:

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Question 95

The geometric mean for the data set having negative observations:

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Question 96

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:

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Question 97

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?

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Question 98

Which distribution has the same mean and variance?

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Question 99

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:

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Question 100

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

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