DAT 565 Data Analysis and Business Analytics

  1. An owner of a grocery store wanted to determine the brands of soda that consumers purchase at the store. When summarizing the data about soda brand purchase the meaningful measure of center is the?
  2. Nadia purchased 400 shares of XYZ stocks at $20 per share. When the stock decreased in value to $16 a share, Nadia purchased 600 more shares of XYZ stock. The weighted average price per share that Nadia paid for XYZ stock is $ ____ (use 2 decimal places).
  3. When comparing two data sets with different units of measurement, what is the relative measure of dispersion?
  4. If Fund A has a coefficient of variation of 1.1, and Fund B has a coefficient of variation of 0.9, Fund _____ has the greater relative dispersion.
  5. A company sold 1000 units in its first year of operation, 1400 units in its second year of operation, and 1680 unites in the third year of operation. The average growth rate of the company’s sales for years one to three is _____%. (Round your final answer to a decimal answer with four places and then cover to % with 2 decimals).
  6. Which of the following situations are valid reasons for removing an outlier from a data set?
  7. If a company sold 1000 units in its first year of operation, and 1400 units in its second year of operation, and 1680 units in the third year of operation. The average growth rate of the company’s sales for years one to three is ____ (Round the final answer to a decimal answer with four places and then convert to % with 2 decimals).
  8. In which of the following data sets would the arithmetic mean not be a good measure of central locations?
  9. An owner of a grocery store wanted to determine the brands of soda that consumers purchase at the store. When summarizing the data about soda brand purchase the meaningful measure of center is the?
  10. Randall Racer runs the 100 meter dash in an average time of 10.4 seconds with a standard deviation of 0.1 seconds. If Randall’s time are normally distributed, we have a 99.7% expectation that his finishing time for his race will be grayer than ____ seconds.

 

 

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