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Statistics and probability

Course: Statistics and probability > Unit 3

Lesson 4: Variance and standard deviation of a population
Math
Statistics and probability
Summarizing quantitative data
Variance and standard deviation of a population
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Standard deviation of a population

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Problem

The following data points are the yearly salaries (in thousands of dollars) of the 4 high school cheerleading coaches in Dakota County.
41,46,52,49
Find the standard deviation of the data set.
Round your answer to the nearest hundredth.
  • Your answer should be
  • an integer, like 6
  • a simplified proper fraction, like 3/5
  • a simplified improper fraction, like 7/4
  • a mixed number, like 1 3/4
  • an exact decimal, like 0.75
  • a multiple of pi, like 12 pi or 2/3 pi
thousand dollars
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