Question: Take the following 2 data sets - these are unicorn masses in kg. Sample from population 1: 9, 10, 10, 11 Sample from population 2:

Take the following 2 data sets - these are unicorn masses in kg.

Sample from population 1: 9, 10, 10, 11

Sample from population 2: 1, 3, 6, 31

a. What is the mean mass of each set of unicorns?

b. What is the variance in mass of the unicorns?

c. What is the standard deviation in mass of the unicorns?

d. What do each of these measures tell us about the data set?

e. Now calculate the standard error of the sample mean for each data set.

f. Standard deviation is used to describe how spread out the data are. Which population seems to have more variation in mass?

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