Statistics Test 1 — Agri Master Mind
Unitless measure of dispersion is–
- Standard deviation
- Mean deviation
- Range
- CV
How many number of treatments can be adopted in LSD–
- 5 to 12
- 5 to 8
- Both (A) & (B)
- None
The hypothesis of no difference is known as–
- The hypothesis of no difference is known as–
- Alternative hypothesis
- Simple hypothesis
- Null hypothesis
The completely randomized design is appropriate when the experimental material is–
- Limited and heterogeneous
- Limited and homogenous
- Unlimited and heterogeneous
- Unlimited and homogenous
The range of multiple correlation coefficient lies between–
- 0 to + 1
- -1 to + 1
- 0 to 00
- - 00 to + 00
The repetition of the treatment under investigation is known as–
- Randomization
- Local control
- Replication
- None of these
When the fertility gradient of the field is in one direction, which design is appropriate–
- SPD
- LSD
- CRD
- RBD
Select the most appropriate design when all factors are not of equal importance in experimentation–
- Augmented
- Strip plot design
- Split plot design
- LSD
Which of the following is true for the coefficient of correlation?
- The coefficient of correlation is not dependent on the change of scale
- The coefficient of correlation is not dependent on the change of origin
- The coefficient of correlation is not dependent on both the change of scale and change of origin
- None of the above
Which of the following statements is true about the type two error?
- Type two error means to accept an incorrect hypothesis
- Type two error means to reject an incorrect hypothesis
- Type two error means to accept a correct hypothesis
- Type two error means to reject a correct hypothesis
The original hypothesis is known as ______
- Alternate hypothesis
- Null hypothesis
- Both a and b are incorrect
- Both a and b are correct
The independent variable is used to explain the dependent variable in ________
- Linear regression analysis
- Multiple regression analysis
- Non-linear regression analysis
- None of the above
Which of the following statements is true about the level of significance?
- In testing a hypothesis, we take the level of significance as 2% if it is not mentioned earlier
- In testing a hypothesis, we take the level of significance as 1% if it is not mentioned earlier
- In testing a hypothesis, we take the level of significance as 10% if it is not mentioned earlier
- In testing a hypothesis, we take the level of significance as 5% if it is not mentioned earlier
Which of the following statements is true about the type two error?
- Type two error means to accept an incorrect hypothesis
- Type two error means to reject an incorrect hypothesis
- Type two error means to accept a correct hypothesis
- Type two error means to reject a correct hypothesis
The variance is the square of
- Mean deviation
- Range
- Standard deviation
- Correlation
Which type of average would be suitable to calculate the size of agricultural holding–
- Median
- Weighted HM
- Weighed AM
- Mode
The geometric mean of a given series is always less than its–
- Harmonic mean
- Weighted mean
- Arithmetic mean
- Weighed harmonic mean
The intelligence, ability or efficiency can be measured by use of–
- Mode
- Median
- Harmonic mean
- Arithmetic mean
Which of the following statements is true about the correlational analysis between two sets of data?
- The correlational analysis between two sets of data is known as a simple correlation
- The correlational analysis between two sets of data is known as multiple correlation
- The correlational analysis between two sets of data is known as partial correlation
- None
If all the variate values are the same (e.g. 8,8,8), the standard deviation will be
- 0
- 4
- 8
- 16
When we want average of rates of change or ratios or index number, which measure of central tendency is suitable–
- Geometric mean
- Mode
- Arithmetic mean
- Median
Who is considered as father of statistics
- Boddington
- Pearson
- AL Bowley
- RA Fisher
Indian Livestock after every Census is conducted–
- 2 years
- 5 years
- 10 years
- 20 years
The critical difference (CD) is a form of t-test and its formula is given by
- CD=t/SE(D)
- CD=t.SE(D)
- CD=t+SE(D)
- CD=F.SE(D)
When we want to conduct an experiment on a long strip of land, which design will be preferred–
- CRD
- RCBD
- SPD
- LSD
The X2 (chi-square) test for goodness of fit and independence of attributes come under
- Parametric tests
- Non - parametric test
- Both (A) and (B)
- None
Rank correlation is tested by
- Quade test
- F – test
- t – test
- Friedmann test
During experimentation, we lost some information and we want to get idea about these values, which technique will be useful
- Field plot technique
- Missing plot technique
- Seed plot technique
- Uniformity trial
Annawari’ procedure is a
- Traditional method for estimation of crop yield
- Method for weather forecasting
- Method for rainfall forecasting
- All of these
The square of the standard deviation is known as the
- Mean deviation
- Standard deviation
- Coefficient of variance
- Variance
Student's t-test is used when sample size is and population standard deviation is not known
- Large
- Small
- Both
- None
For test of goodness of fit, which statistical test is applied
- Chi square test
- F - test
- z - test
- None
Which of the following is not considered as basic principle of field experimental design?
- Treatments
- Randomization
- Replications
- Local control
In a split plot design, 5 levels of main plot and 4 levels of sub plot treatments studied with 3 replications. What will be the d.f. for error b source?
- 8
- 12
- 30
- 59
In a split plot design the main plot treatments are studied with _____ precision compared to sub plot treatments
- Less
- Equal
- More
- None
When the calculated F is greater than table F value at 5% only, the differences in treatments is consider _________
- Significant
- Non significant
- Highly significant
- None
If there are 6 levels of moisture regime and 6 replications each, the error degree of freedom for LSD will be
- 25
- 35
- 36
- 20
Which measure of central tendency is appropriate for index numbers?
- Harmonic mean
- Arithmetic mean
- Geometric mean
- Mode
If there are 5 treatments with 4 replication to each, the error degree of freedom for CRD will be
- 9
- 12
- 15
- 20
The ANOVA table of ________ design consist three error variance
- Latin square design
- Strip plot design
- Factorial RBD
- Completely randomized design
To study two factors with different level of precision _____ design is used
- Completely randomized design
- Factorial design
- Latin square design
- RBD
When experimental material is limited and homogenous______ design is used
- Latin square design
- Strip plot design
- Split plot design
- Completely randomized design
For X2 test no theoretical cell frequency should be small, it should be at least
- 2
- 5
- 8
- 12
Which design follows the number of rows = number of columns = Number of treatments ?
- SPD
- Strip plot design
- RBD
- LSD
At present time how many number of forecasts issued by Government of India on important crops
- 50
- 60
- 70
- 80
Poisson distribution deals with
- Discrete variables
- Continuous
- Both (A) and (B)
- None
The correlation coefficient is the geometric mean between two
- Median
- Standard deviation
- Regression coefficient
- Mode
The R rank correlation was suggested by
- James Bernoulli
- SD Poisson
- C Spearman
- Gauss
When there are several factors with different levels to be experimented simultaneously with the same level of precision appropriat–
- CRD
- LSD
- RBD
- Factorial scheme
When the fertility gradient of the field goes in two directions, which design is most appropriate–
- Augmented design
- CRD
- LSD
- SPD
When fertility gradient in one direction, the statistical design to be used
- CRD
- RBD
- SPD
- LSD
Which of the followings represents median?
- First quartile
- Fiftieth percentile
- Sixth decile
- None of the above
The family of parametric distributions which has mean always less than variance is:
- beta distribution
- lognormal distribution
- lognormal distribution
- negative binomial distribution
For calculation least of X2, N should be at least–
- 20
- 30
- 40
- 50
For comparison of two means from independent samples which test is applicable
- t-test
- X2- test
- F – test
- z – test
Arithmetic mean and variance are always equal in
- Normal distribution
- Poisson distribution
- Binomial
- All of these
For paired observation, which test is used for testing the significnce of a mean differenc
- Paired t- test
- t- test
- F – test
- X2- test
Which design is most appropriate for laboratory experiments?
- CRBD
- CRD
- LSD
- Factorial RBD
Indian Agricultural Statistical Research Institute is established at
- Lucknow
- New Delhi
- Kolkata
- Jaipur
A measure of the peakedness or convexity of a curve is known as
- Skewness
- Kurtosis
- Ogive
- Histogram
When the value of correlation coefficient is more than one then two variables are
- Uncorrelated
- Partially correlated
- Perfectly correlated
- Highly Correlated
A normal distribution is due to the work of
- Laplace and Gauss
- James Bernoulli
- SD Poisson
- Demoivre
The probability of committing type I error is known as
- Test of significance
- Level of significance
- Composite hypothesis
- None of these
A wrong decision about Ho leads to
- one kind of error
- two kinds of error
- three kinds of error
- four kinds of error
Which measure of dispersion has a different unit other than the unit of measurement of Values
- Range
- Mean deviation
- Standard deviation
- Variance