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Online Tests
ICS Part 2 Statistics Chapter 16 Online Test MCQs With Answers
Question # 1
Increase the number of patients in the hospital due to heel stock is:
Choose an answer
Seasonal trend
Secular trend
Cyclical movements
Irregular variation
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Question # 2
For a least squares linear trend=ŷ= a + b x,
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Σy <Σŷ
Σŷ = 0
Σy =Σŷ
none of these
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Question # 3
The additive model of the time series is:
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Y = T + S + C + I
TSCI
Y = a + bX
Y = a + bX + cX
2
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Question # 4
In the measurement of secular trend the moving averages
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give the trend in a straight line
measure the seasonal variations
smoothes out a time series
measure irregular fluctuations
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Question # 5
The graph of time series is called:
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Histogram
Historigram
Straight line
Ogive
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Question # 6
Sum of squares of residuals is denoted by
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∑
e
∑
e
2
∑
e
3
∑
e
4
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Question # 7
For a least squares linear trend=ŷ = a + bx, b is the
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variable
intercept
trend
slope
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Question # 8
The multiplicative time series model is:
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Y = T + S + C + I
TSCI
Y = a + bX
Y = a + bX + cX
2
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Question # 9
The secular trend is measured by the method of semi-averages when
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time series contains yearly values
trend is linear
time series contains odd number of values
none of these
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Question # 10
For a least squares linear trend ŷ = a + bx, the Σ(y-ŷ)
2
= 0 when
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all the y-values lie on the line
all the y-values are positive
all the y-+values lie above the line
none of these
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Question # 11
The equation of the quadratic (parabolic) trend is
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ŷ=a+bx
ŷ=a+by
ŷ=a+bΣx+cΣx
2
ŷ=a+bx+cx
2
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Question # 12
The straight line is fitted to a time series when the movements in the time series are
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linear
quadratic
cubic
constant
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Question # 13
The systematic components of time series which follow regular pattern of variations are called:
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Noise
Signal
Additive model
Multiplicative model
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Question # 14
The trend values in freehand curve method are obtained by:
Choose an answer
Equation of straight line
Second degree parabola
Signal
Graph
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Question # 15
A business cycle has
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one phase
two phases
three phases
four phases
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Question # 16
In time series seasonal variations can occur within a period of:
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Nine years
Four Years
Three years
One year
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Question # 17
The least squares estimates are unbiased estimates of the
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statistic
time series
parameters
variance
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