Statistics

Corelation and Regression
A scatter diagram is:
A statistical test
Linear
Curvilinear
A graph showing x and y values
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Introduction to Statistics
Individual respondents, focus groups, and panels of respondents are categorized as:
Primary Data Sources
Secondary Data Sources
Itemised Data Sources
Pointed Data Sources
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Sampling Techniques
In systematic sampling the first selection of unit determines the:
first sample
last sample
whole sample
none of the above
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Introduction to Statistics
Life of a T.V picture tube is a:
Discrete variable
Continuous variable
Qualitative variable
Constant
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Introduction to Statistics
When data are collected in a statistical study for only a portion or subset of all elements of interest we areusing:
A sample
A Parameter
A Population
Both b and c
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Probability Distribution
Mean of Negative Exponential distribution is:
?(1-?t)?^(-1)
1-e^(?-x/?_? )
2?e^(-1)
?
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Measures of Central Tendency
The mean of 10 numbers is 9, then the sum (total) of these numbers will be:
9
0.9
70
90
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Statistical Inference
Types of estimation are:
Two
Three
One
Four
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Sampling Techniques
Cluster sampling is a non-probability sampling technique:
True
False
True
False
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Statistical Inference
A statistic (estimator) s(x) is sufficient for ? if conditional density is:
Dependent of parameter
Equal to parameter
Independent of parameter
None of these
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