Which one of the following is NOT a measure of central a tendency?
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Mean deviation
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Geometric mean
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Median
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Fashion
Which test is used to test the independence of two attributes/variables
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t-test
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Paired t-test
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Chi-square test
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Normal test
Good measure of central tendency is -
Which measure of dispersion is based on all the observations?
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Range
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Quartile Deviation
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Mean Deviation
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All the above
Classification according to measurement or quantity is called-
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Qualitative classification
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Quantitative classification
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Both qualitative and quantitative classification
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None of the above
Average used in open end classes is
Mean deviation will be minimum when the deviations are taken d about -
The limits of correlation coefficient are
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-1 to 1
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Zero to 1
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No limit
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Any other
Correlation coefficient is independent of-
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Change of origin
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change of scale
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Change of origin and scale
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None of the above
The degree of freedom of X 2 test for 4 x 3 contingency table is -
The relation among A.M., G.M. and H.M. are-
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M. > G.M. <H.M
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M. < G.M. <H.M
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M.> G.M. > HM
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Any other
The minimum number of frequencies are required in Chi-square a Test's-application -
While tossing of two coins simultaneously, probability of appearance of two heads p(HH) is –
Mean deviation will be minimum when the deviations are taken about -
Which is not a principle of experimental design...?
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Replication
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Randomization
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Local control
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Treatment
To find out the size of garments we use....
Example of absolute measures of dispersion
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Range
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Mean Deviation
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Standard deviation
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All of these
Which is type of kurtosis:
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Leptokurtic (narrow peak/base)
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Mesokurtic (normal curve)
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Platykurtic (flat peak/broad base)
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All of these
In statistics t test is used when........
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Sample size < 30
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Sample size > 30
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Population SD is unknown
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both a & c
Examples of Poisson Distribution-
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Number of deaths from a disease
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Number of defective materials
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Number of wrong calls receives in a month.
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All of these
Types of correlation:
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Positive/negative:
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Simple, partial and multiple correlations:
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Linear and non linear correlation:
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All of these
Conditions for applying x test:
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Total sample size > 50
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Expected frequency of each and every class should not be less than 5
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The sample observation should be independent
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All of these
Application of Chi-square?
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To test the goodness of fit
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Testing the independence of two attributes
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To study gene frequencies in population genetics
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All of above
The classification according to some quality or attribute is called.....classification.
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Qualitative
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Quantataive
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Non- Parameter
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All the Above
Median is the average suited for........ classes
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Magnitude
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Numerical Abbreviation
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Both
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None of these
The Range of any series is the.......of the greatest (maximum) and the smallest minimum observation.
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Difference value
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Degree of freedom
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Kurtosis
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S.D
.........is a good measure of dispersion.
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Difference value
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Degree of freedom
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Kurtosis
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S.D
The limit of correlation coefficient is
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-1 to +1
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-1 to
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1 to 9
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infinite
In Chi-square test, total number of frequencies should be greater than ...........
In Chi-square test, Yates correction is needed when 5 any of cell frequencies is less than.........
Paired t-test is applied when observations are
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Mean
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Mode
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Median
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None of these
In trails, one factor is tested, than it is called..........
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Design
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Experiments
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Research
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None
Range is the measure of...........
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Standad Deviation
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Variance
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Dispersion
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None of these
The most commonly used measure of central tendency is
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Mean
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Arthmatric mean
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Both
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None of these
Standard deviation of the sampling distribution of means is called.....
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Standard error of mean (SEM)
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Correlation coefficient
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Chi-square
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All of these
Regressin coefficients are not independent of change of…..
Average rates are calculated by .....
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Mean
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Mode
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Median
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None of these
Independence of two attributes is tested by..
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F-Test
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Z-Test
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T- Test
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Chi square (X square)
Father of vital statistics was….
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R.
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Fisher
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Captain John Grant
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None of these
The purpose of randomization in field experiment is to..............
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Control variance
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Error Derror
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Experimental Design
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None of these
Unit less measure of dispersion is..............
Coefficient of Variation is computed by...........
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(
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V./Mean)/xy
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(S.
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/Mean)/100
Expression for degrees of fredom in RBD is.....
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(n-1) (r-2)
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(n-1) (r-3)
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N2-1
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(n-1) (r-1)
Probability of impossible event is always.........
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Zero
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One
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Negative
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None of these
The range of probability lies between...........
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-1 to +1
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-1 to ∞
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0 to 1
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None of these
To find the average height of plants we should
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Arithmetic mean
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Chi-Square
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Standrad Deviation
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All of these
Goodness of test is used for distribution of.........
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Arithmetic mean
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Chi-Square
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Standrad Deviation
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All of these
Minimum degree of freedom for error in ANOVA is...
For testing the Significance of the difference between two means, we use the following test..?
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T-test
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F-test
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X 2 Test
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Regression coefficient T test