Resource assessment exercises: basic statistics additional exercises
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Revision as of 15:20, 23 June 2014
Take a sample of size \(n=100\) from trees
and name this sample t.sample
. This sample will be used for the exercises.
- What is the maximum and minimum value for
dbh
in you sample? - Estimate the mean, variance, standard deviation, and coefficient of variation for the variable
height
. - Estimate the standard error of the mean for the variable
dbh
(without applying the fpc). How wide is the confidence interval when we set \(\alpha=0.01\)? - Test whether there is a difference in the estimate of the standard error when you apply the fpc.
- Estimate the required sample size for a relative standard error of 1%.
- Estimate the proportion of oak trees. Provide confidence intervals for your estimate.