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Online Tests
ECAT Pre General Science Statistics Online Test MCQs With Answers
Question # 1
The entries in different cells of columns and rows in a table are called
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Body of the table
Captions
Stub
Prefatory notes
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Question # 2
An index number calculated for more than one items is called
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Composite
Simple
Relative
None of these
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Question # 3
The branch of statistics concerned with using probability concepts to deal with uncertainty in decision making is called
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Estimation
Statistical Inference
Point estimate
None of these
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Question # 4
A well defined collection of distinct objects is called
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Probability
Chance
Element
A set
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Question # 5
The probability distribution of a discrete random variable is usually written with the help of a function, called its
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Formula
Variable
Random variable
Discrete variable
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Question # 6
The unit of frequency is
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Hertz
Bytes
Mega bytes
None of these
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Question # 7
The first moment about mean is equal to
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Mean
Zero
Median
Mode
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Question # 8
The probability distribution of a discrete random variable is usually called its probability
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Inverse function
Mass function
Density function
Frequency function
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Question # 9
Lack of symmetry is called
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Dispersion
Moment
Skewness
Kurtosis
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Question # 10
The heights of all the students enrolled at a college in a given year, is an example of
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Infinite population
Finite population
Discrete sampling
None of these
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Question # 11
The Greek letters
α ,
β ....... are used to denote the ________ of A,B,C ............
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Presence
Inverse
Absence
None of these
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Question # 12
Computer memory
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Performs all calculations
Receives input data
is extremely limited
is better than human memory
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Question # 13
Simple bar chart is represented by
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Circular region
Polygons
Rectangles
None of these
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Question # 14
A value calculated from sample is called
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Parameter
Variable
Constant
Statistic
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Question # 15
The point in time at which the selected number was measured is referred to as the
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Index number
Base period
Relative price
Weighted Index
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Question # 16
A set od data depending on the time is called
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Historigram
Histogram
Time series
None of these
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Question # 17
Primary data and ungrouped data are
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Same
Opposite
Not same
Proportional
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Question # 18
The heading for different columns are called
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Stubs
Source notes
Columns captions
Footnotes
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Question # 19
A null hypothesis is always one of status quo or
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effected
having some difference
having alternative
no difference
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Question # 20
A procedure of making judgment about the unknown value of a population parameter by using the sample observation is called
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Statistical Inference
Parameter
Testing of hypothesis
Statistical estimation
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Question # 21
If no attributes are specified, then the order of the class is
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0
1
n
None of these
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Question # 22
A computer stores instructions in
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English language
Octal Number System
Binary Number System
Decimal Number System
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Question # 23
G.M becomes zero if any of the observation is
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zero
1
similar
Opposite
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Question # 24
The mean of the absolute deviations between the values and their median is called
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Population
Standard deviation
Range
Mean deviation
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Question # 25
If all items are given equal weight, the index number is called
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Weighted
Unweighted
Relative
Composite
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Question # 26
Computer means
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Complete
Processing
Data
Calculate
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Question # 27
The ______ is a systematic component of variation in a time series.
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Historigram
Signal
Noise
Time period
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