Econometrics UE Past Papers Questions.


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(3286) Question Category: True OR False

One can simply use descriptive statistics to test hypothesis without any further computation/ analysis.

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(3287) Question Category: True OR False

When the dependent variable is dichotomous the use of ordinary least square method is justifiable.

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(3288) Question Category: Short answers

Define the following concepts

  1. estimator
  2. estimate
  3. biasness
  4. Efficiency
  5. asymptotic efficiency
  6. BLUE
  7. statistical model
  8. mathematical model
  9. heteroskedasticity
  10. autocorrelation

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(3289) Question Category: Mathematical Calculation

A confidence interval is calculated as ar{x}pm Z_{frac{alpha}{2}}frac{sigma }{sqrt{n}}. A researcher from SUA observed that in a sample of 25, the mean was 1.63 and sample variance was 0.51

  1. Construct a 95% confidence interval for mu. Assume that the sample was drawn from a normal distribution. Note that t_{frac{alpha}{2}}=2.064
  2. What is the meaning of this confidence interval?
  3. Another researcher claims that the population mean is 1.92. At this level of significance.
  1. State the null and alternative hypothesis
  2. Test the null hypothesis.

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