Statistics

Introduction to Statistics
Data in the Population Census Report is:
Grouped data
Ungrouped data
Secondary data
Primary data
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Corelation and Regression
When the correlation coefficient between x and y is positive, then as variable x decreases, variable yRemains the same:
Increases
Decreases
Changes linearly
none
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Probability Distribution
?^2?normality if:
n?8
n?0
n?10
n?1
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Corelation and Regression
In a regression analysis if SSE = 200 and SSR = 300, then the coefficient of determination is :
0.6667
0.6000
0.4000
1.5000
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Statistical Inference
If expected value of an estimator is equal to its respective parameter then this property known is:
Biasedness
Estimation
Unbiasedness
Both B and C
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Measures of Central Tendency
The measures of dispersion are changed by the change of:
Scale
Origin
Unit
None of these
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Measures of Central Tendency
The most repeated (popular) value in a data set is called:
Median
Mean
Mode
Geometric Mean
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Measures of Dispersion
Study of scatteredness of observations is known as :
Measure of dispersion
Standard deviation
Measure of central tendency
None of the above
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Sampling Techniques
Systematic sample is as precise as stratified random sample when one unit is drawn from:
population
each unit
each group
each stratum
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Sampling Techniques
A questionnaire consists of set of queries about a:
specific issue
sample
population
sample design
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