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This module provides a number of homework/review exercises related to Probability.

The first six exercises refer to the following study: In a survey of 100 stocks on NASDAQ, the average percent increase for the past year was 9% for NASDAQ stocks. Answer the following:

The “average increase” for all NASDAQ stocks is the:

  • Population
  • Statistic
  • Parameter
  • Sample
  • Variable

  • Parameter

All of the NASDAQ stocks are the:

  • Population
  • Statistic
  • Parameter
  • Sample
  • Variable

  • Population

9% is the:

  • Population
  • Statistic
  • Parameter
  • Sample
  • Variable

  • Statistic

The 100 NASDAQ stocks in the survey are the:

  • Population
  • Statistic
  • Parameter
  • Sample
  • Variable

  • Sample

The percent increase for one stock in the survey is the:

  • Population
  • Statistic
  • Parameter
  • Sample
  • Variable

  • Variable

Would the data collected be qualitative, quantitative – discrete, or quantitative – continuous?

quantitative - continuous

The next two questions refer to the following study: Thirty people spent two weeks around Mardi Gras in New Orleans. Their two-week weight gain is below. (Note: a loss is shown by a negative weight gain.)

Weight Gain Frequency
-2 3
-1 5
0 2
1 4
4 13
6 2
11 1

Calculate the following values:

  • The average weight gain for the two weeks
  • The standard deviation
  • The first, second, and third quartiles
  • 2.27
  • 3.04
  • -1, 4, 4

Construct a histogram and a boxplot of the data.

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Source:  OpenStax, Collaborative statistics for mt230. OpenStax CNX. Aug 18, 2011 Download for free at http://legacy.cnx.org/content/col11345/1.2
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