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Reading Questions 10a

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To check your answers put them in the appropriate box and click the 'Check' button. Every checker box can do arithmetic and calculate standard functions (see calculator help). If you give decimal answers, give them to at least 3 decimal places.

As you work you should have pencil and paper handy for calculations and thinking!

Note: some questions ask for a formula. For the checker we ask you to plug a value into the formula. For your pset you still need to give the whole formula.

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Problem 1. 

You have experimental data x1,,xn drawn from a N(0,σ2) distribution.

(a) True or False: σ is a statistic.

 True
 False
  

(b) True or False: The sample variance is a statistic.

 True
 False
  

(c) True or False: The sample mean is a statistic.

 True
 False
  

(d) True or False: The sample mean will be 0.

 True
 False