Practice Quiz

DSST Principles of Statistics Exam Prep - Question List

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31.

An Entertainment consulting agency wishes to study the effect of salary bonuses on employee performance. Specifically, they wish to find out if an annual bonus increases the number of signed clients. What does employee performance represent, in this case?

  1. research question
  2. independent variable
  3. dependent variable
  4. research design
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32.

NEC launches a new TV set in Washington State in 2008 with a limited release. Company executives are interested in tracking sales' patterns in order to make production decisions for the following year. What graphical tool can display sales figures by month?

  1. histogram
  2. run chart
  3. CTQ tree
  4. process map
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33.

Kroger's grocery stores in Houston are interested in gauging the response of weekend managers to door promotions. By selecting specific managers, what sampling method are executives using in their research?

  1. convenience sampling
  2. stratified sampling
  3. simple random sampling
  4. judgment sampling
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34. In a game, one card is drawn from a complete deck of playing cards without jokers. If the card is a club or a queen, the gambler wins double his bet. Otherwise, the dealer keeps the money. How much better are the dealer's odds in this game?
  1. 50% better
  2. 38% better
  3. 32% better
  4. 44% better
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35.

JC Penney is a large retailer with hundreds of outlets across the United States. An executive manager is interested in how promotional spending affects quarterly sales figures in North Carolina where sales have been dismal in a number of quarters. Her hypothesis is that promotional spending does not affect quarterly sales in North Carolina. What is a null hypothesis in a research study based upon?
 

  1. educated guess about a population study
  2. educated guess about a sample study
  3. educated guess about a population parameter
  4. educated guess about a sample statistic
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