With reference to the value of Q3 which of the following statement is/are correct?( X ) th percentile
A. Only 1
B. Only 2
C. Both 1 and 2
D. Neither 1 nor 2
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Sampling is the proces of learning about the
A. population
B. sample
C. Both A and B
D. None of these
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Sampling error is . . . . . . . . in incomplete enumeration.
A. existent
B. non-existent
C. estimated
D. None of these
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Which one of the following tenets is not correct in the context of Central Limit Theorem?
A. If a population from which a sample is drawn is normally distributed the sampling distribution of mean (SDM) will be normal for all sample sizes
B. The mean of the SDM is the population mean
C. If the population is not normal from which the sample is drawn, the SDM is not normal for any sample size
D. If the population is not normal from which a sample is drawn, the SDM approaches normality as the sample size increases
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In regression, the equation that describes how the response variable (y) is related to the explanatory variable (x) is:
A. the correlation model
B. the regression model
C. used to compute the correlation coefficient
D. none of these alternatives is correct
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In a binomial distribution, if n = 7 and P = 0.6, then P(x = 7) will be equal to
A. (0.6)6
B. (0.7)6
C. (0.6)7
D. (0.4)7
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Which one of the following is a false description?
A. In a moderately asymmetrical distribution, the empirical relationship between Mean, Mode and Median suggested by Karl Pearson is: Mean - Mode = 3 (Mean - Median)
B. Coefficient of variation is an absolute measure of dispersion
C. Measure of skewness indicates the direction and extent of skewness in the distribution of numerical valuesin the data set
D. Kurtosis refers to the degree of flatness or peakedness in the region around the mode of a frequency curve
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The . . . . . . . . of the normal distribution occurs on the X-axis at a point, where the curve can reach the maximum height.
A. mean
B. median
C. mode
D. standard deviation
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The first census in India:
A. During the tenure of Lord Mayo
B. During the tenure of Lord Ripon
C. During the tenure of Lord Dafrin
D. During the tenure of Lord Littan
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The listing of the possible outcomes of an experiment and their corresponding probability is called:
A. Random Variable
B. Contingency table
C. Bayesian Table
D. Probability Distribution
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Poisson distribution is . . . . . . . . probability distribution.
A. individual
B. discrete
C. continuous
D. None of these
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A functional relationship between two variables is called
A. Correlation Analysis
B. Time Series Analysis
C. Regression Analysis
D. Association Attributes
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Match the following items of
List-I and
List-II with regard to hypothesis-testing.
List-I List-II
a. The ability of test to reject the null hypothesis when it is false
1. Level of significance
b. The probability of accepting a false null hypothesis
2. Type I error
c. The probability of rejecting a true null hypothesis due to sampling error
3. Type II error
d. The probability of rejecting a true null hypothesis
4. Power of a test
A. a-4, b-2, c-1, d-3
B. a-4, b-3, c-1, d-2
C. a-1, b-2, c-3, d-4
D. a-2, b-3, c-1, d-4
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Each normal distribution is defined by its two parameters viz.
A. mean and median
B. standard deviation and mode
C. mean and standard deviation
D. None of the above
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If the percentage error is -2 and the estimated value is 500, then the actual value will be
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If P(B/A) = p(b), then P(A ∩
A. p(b)
B. p(a)
C. p(b) × p(a)
D. p(a) + p(b)
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The number of COVID19 viruses observed under 5 separate electronic slides were 3, 4, 5, 6 and 7. The sum of squared deviations of observations from their sample mean is:
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Given, mode = 22 and median = 21.4. Find out the average mean.
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Karl Pearson's coefficient of skewness is calculated by following formula.
A. σ X − Z
B. σ X − M
C. σ Z − X
D. Z X − σ
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In a negatively skewed distribution
A. Mode > Median > Mean
B. Median > Mode > Mean
C. Mode < Median < Mean
D. None of these
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