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Tutorial1_Stat331

# Tutorial1_Stat331 - Tutorial 1 Stat 331 Spring 2010 Clicker...

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Tutorial 1 Stat 331 – Spring 2010 Clicker questions that are highlighted and worth 2 extra marks if you get them right. Demonstration: Pogs – what are they? Question 1: A measurement study. Problem: How large is the distance between B and C? Plan: Everyone in class will use a ruler to measure the distance between B and C. Plan: Model –> Y=µ+ε Clicker I) The least squares estimate of µ, for this model, is: A) population mean B) sample mean C) sample sum D) population sum E) None of the above. Data Collection (in mm): A) 22 B) 23 C) 24 D) 25 E) 26 The estimate for µ from class is: How could I improve the precision? Analysis Clicker II) Using MLE, what is the estimate for σ, for this model? A) (n-1) -1 ∑(x- n -1 ∑x) 2 B) n -1 ∑x C) n -1 ∑(x- n -1 ∑x) 2 D) n -1 ∑(x- n -1 ∑x) E) none of the above

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Question 2: A regression study. Problem: One parameter of interest is the distance between B and C. It is believed that a person who knows how the pog works will do better if B and C are close together.
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Tutorial1_Stat331 - Tutorial 1 Stat 331 Spring 2010 Clicker...

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