In a negatively-skewed distribution,
A. The mean is larger than the median
B. The mean is smaller than the median
C. The mean is the same as the median
D. The mean lies between the median and the mode
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Under Time Series Analysis regular and periodic moment not exceeding one year is called
A. Trend
B. Circular Variation
C. Irregular Moment
D. Seasonal Variation
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The scale of measurement which has no order, distance and unique origin is known as which one of the following?
A. Nominal scale
B. Ordinal scale
C. Interval scale
D. Ratio scale
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If the sum of squares of deviations within samples is 140 with 12 degrees of freedom and the sum of squares of deviations between samples is 190 with 2 degrees of freedom, the test statistic will be:
A. 81.4
B. 12.28
C. 8.14
D. 1.22
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According to sampling, as sample size increases, the error in sampling tends to . . . . . . . .
A. increase
B. decrease
C. remains constant
D. be unstable
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In a Poisson Distribution, if mean (m) = e, then P(x) is given by
A. x ! e ( x − m )
B. x ! e ( m − x )
C. e ( m − x ) x !
D. e ( x − m ) x !
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Which of the following should you think about when preparing your research?
A. Your sample frame and sampling strategy
B. The ethical issues that might arise
C. Negotiating access to the setting
D. All of the above
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The special rule of multiplication of probability, the events must be:
A. Independent
B. Mutually Exclusive
C. Bayesian
D. Empirical
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In case of three attributes the total number of classes will be
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If in two series the change occurs in same direction (either increase or decrease) then correlation is
A. negative
B. positive
C. zero
D. None of these
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The power of the statistical hypothesis testing is denoted by
A. α (alpha)
B. β (beta)
C. 1 - α
D. 1 - β
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Which of the following is not a subsidiary part of a formal report?
A. Table of contents
B. Glossary
C. Appendix
D. References
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Which of the following formula is not correct? Select your answer from the options given below
A. B. b x y = r σ y σ x
C. b y x = r σ y σ x
D. y − y = r σ y σ x ( x − x )
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If a card is drawn from a pack of Cards the probability of getting either a king or a queen is . . . . . . . .
A. 13 2
B. 15 5
C. 4 1
D. None of the above
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If a number of chi-square values have been obtained from a number of samples similar data, then because of the additive nature of chi-square we can combine the various values of chi-square by just simply . . . . . . . . them.
A. adding
B. subtracting
C. multiplying
D. None of these
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For a Poisson's distribution with n = 200, P = 0.02, the mean is-
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If the two regression coefficients are 0.8 and 0.2, then the value of coefficient of correlation is:
A. +0.16
B. -0.40
C. -0.16
D. +0.40
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Type of cumulative frequency distribution in which class intervals are added in top to bottom order is classified as
A. Marginal distribution
B. Variation distribution
C. Less than type distribution
D. More than type distribution
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In the application of chi-square,
1. no theoretical frequency should be small since in the derivation of chi-square continuity assumptions are made.
2. the constraint imposed on cell frequencies must be linear.
3. regroup the frequencies whenever some expected frequency was small.
4. the correction is needed, when some cell frequency was small, i.e. less than 5.
Which of the statements given above are correct?
A. 1, 2 and 3
B. 2, 3 and 4
C. 1, 3 and 4
D. None of these
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The essential qualities of a researcher are:
A. Spirit of free enquiry
B. Reliance on observation and evidence
C. Systematization or theorizing of knowledge
D. All the above
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