For comparing the health conditions of two towns we have to calculate
A. Crude death rate
B. Crude birth rate
C. Standardised death rate
D. Standardised birth rate
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The first step of summarising the data as
A. Tabulation
B. Classification
C. Graphical representation
D. Collection
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The correlation coefficient lies between
A. -1 to +1
B. 0 to +1
C. 0 to -1
D. None of these
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Formula of coefficient of variation is
A. 100 X σ
B. σ 100 X
C. 100 σ X
D. X 100 σ
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If μ4 = 48 in normal distribution, then the value of variance will be
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Extreme values have no effect on
A. Geometric mean
B. Harmonic mean
C. Median
D. Mean
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Statistics can
A. Prove anything
B. Disprove anything
C. Just a tool
D. None of these
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Student's t-distribution was discovered by
A. Karl Pearson
B. Laplace
C. Fisher
D. Gosset
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Arithmetic mean and variance are always equal in
A. Normal distribution
B. Poisson distribution
C. Binomial
D. All of these
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For test of goodness of fit, which statistical test is applied
A. χ 2 -test
B. F-test
C. z-test
D. t-test
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The scope of survey depends on
A. Objective
B. Availability of time
C. Resources
D. All of these
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Which type of average would be suitable to calculate the size of agricultural holding
A. Median
B. Mode
C. Weighted H.M.
D. None of the above
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When there are several factors with different levels to be experimented simultaneously with the same level of precision, which design is most appropriate
A. CRD
B. LSD
C. SPD
D. Factorial scheme
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A frame should be
A. Accurate
B. Complete and adequate
C. Without duplication
D. All of the above
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The mean of first 10 natural numbers is
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For the comparison of two correlated samples under non-parametric alternative to paired Ftest is
A. z-test
B. Mann - Whitney U-test
C. Wilcoxon Signed - rank test
D. Kruskal - Wallis H test
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If there are 8 blocks and 6 treatments in RBD, what are the degrees of freedom corresponding to total sum of squares?
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Television, fairs, radios and exhibitions are media of
A. Group communication
B. Individual communication
C. Community communication
D. mass communication
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When observed and expected frequencies completely coincide, x2 will be
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The strategy for supporting the rapidly expanding agricultural programmes requires
A. That cultivators are educated in favour of modern farming
B. That efforts are made to manufacture more fertilizers
C. That efforts are made to provide more irrigational facilities
D. All of the above
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