Sampling Words (cont) Let's reconsider the population of words in the Gettysburg Address you first looked at in Ex- ploration 2.1. Suppose instead of looking at the proportion of short words (3 or fewer letters) we look at the number of letters per word. 1. Is number of letters per word a quantitative or categorical variable? Why? 2. Suggest a statistic (a single number) you could calculate from your sample that summarizes the number of letters per word variable. 3. What parameter are you hoping to estimate with your statistic? (Hint: Be clear how this relates to the population.) 4. How could we explore whether the sampling methods we used in Section 2.1 are unbiased in estimating the parameter you identied in #3? What does it mean to be unbiased in this context? To enter special characters and formatting, use "CHE-E" in Windows and "Cmd + E" in M