Statistics

Introduction to Statistics
Which one of the following measurement does not divide a set of observations into equal parts?
Quartiles
Standard Deviations
Percentiles
Deciles
Author: rikazzz Comment
Sampling Techniques
b is:
estimate of change
change in y due to x
constant
variable
Author: rikazzz Comment
Sampling Techniques
The estimate of ratio in ratio method of estimation is consistent estimate of population ratio:
True
False
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Statistical Inference
For t = then =:
2
4
0
None of these
Author: rikazzz Comment
Sampling Techniques
A sample of cluster is selected at random:
True
False
Author: rikazzz Comment
Measures of Central Tendency
If the distribution is symmetric about mean then the skewness is_____________.
1
Positive
negative
none
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Probability Distribution
Mode is (l-1)/(m+1) of:
Beta distribution of kind I
Laplace distribution
Beta distribution of kind II
Gamma distribution
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Statistical Inference
The properties of an estimator are:
Unbiasedness
Sufficiency
Consistency
All of these
Author: rikazzz Comment
Probability Distribution
Mean of F-distribution exists for:
n2> 2
n2> 4
n2> 1
None of these
Author: rikazzz Comment
Corelation and Regression
In regression analysis, the variable that is used to explain the change in the outcome of an experiment, orsome natural process, is called :
the x-variable
the independent variable
the predictor variable
all of the above (a-c) are correct
Author: rikazzz Comment

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