The article Hydrogeochemical Characteristics of Groundwater in a Mid-Western Coastal Aquifer System (S. Jeen, J. Kim, et

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The article €œHydrogeochemical Characteristics of Groundwater in a Mid-Western Coastal Aquifer System€ (S. Jeen, J. Kim, et al., Geosciences Journal, 2001:339€“348) presents measurements of various properties of shallow groundwater in a certain aquifer system in Korea. Following are measurements of electrical conductivity (in microsiemens per centimeter) for 23 water samples.

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a. Find the mean.

b. Find the standard deviation.

c. Find the median.

d. Construct a dotplot.

e. Find the 10% trimmed mean.

f. Find the first quartile.

g. Find the third quartile.

h. Find the interquartile range.

i. Construct a boxplot.

j. Which of the points, if any, are outliers?

k. If a histogram were constructed, would it be skewed to the left, skewed to the right, or approximately symmetric?

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