Calculation practice: Basic descriptive stats. Systolic blood pressure was measured (in units of mm Hg) during preventative health examinations on people in Dallas, Texas. Here are the measurements for a subset of these patients.

a. How many individuals are in the sample (i.e., what is the sample size, nⁿ )?

b. What is the sum of all of the observations?

c. What is the mean of this sample? Here and forever after, provide units with your answer.

d. What is the sum of the squares of the measurements?

e. What is the variance of this sample?

f. What is the standard deviation of this sample?

g. What is the coefficient of variation for this sample?

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112,112, 128,128, 108,108, 129,129, 125,125, 153,153, 155,155, 132,132, 137137