ISS (Statistical Services) Statistics Paper III: Questions 39 - 44 of 96
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Question number: 39
» Econometrics » Auto-Correlation
Appeared in Year: 2011
Describe in Detail
Discuss the effect of imperfect multicollinearity on tests and errors. Consider a model
with
and with
, ,
and
Do you think multicollinearity is present in the model? If yes, give reasons. Further show that as
increases, also increases.
Explanation
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Question number: 40
» Applied Statistics » Time Series Analysis » Exponential and Moving Average Smoothing
Appeared in Year: 2011
Describe in Detail
Explain moving average [m, p]. Let with p = 1 and m = 2k + 1, obtain the coefficient of and [m, p]
Explanation
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Question number: 41
» Applied Statistics » Index Numbers » Price Relatives and Quantity or Volume Relatives
Appeared in Year: 2010
Write in Short
Discuss briefly the steps involved in the construction of cost of living index number.
Question number: 42
» Applied Statistics » Time Series Analysis » Economic Time Series & Components
Appeared in Year: 2010
Write in Short
Discuss the ratio to trend method for separating the seasonal component in a time series.
Question number: 43
» Sampling Techniques » Simple Random Sampling and Systematic Sampling
Appeared in Year: 2011
Describe in Detail
Explain aligned sample and unaligned systematic sampling method
Explanation
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Question number: 44
» Sampling Techniques » Simple Random Sampling and Systematic Sampling
Appeared in Year: 2010
Describe in Detail
Explain the concepts of linear and circular systematic sampling giving suitable illustrations.
Further, show that for linear systematic sampling, sample mean is an unbiased estimator for population mean.
Explanation
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