MWF Statistics: Math 131http://www.profsullivan.com/math-131-mwf/en-US2012-02-16T11:32:15ZSquarespace Site Server v5.11.81 (http://www.squarespace.com/)No Class on Wednesday, February 15http://www.profsullivan.com/math-131-mwf/2012/2/14/no-class-on-wednesday-february-15.htmlMary E. Sullivan2012-02-14T14:37:49ZI will not be in today because my son is sick.  You may want to preview the Chapter 3 lecture notes to see what we'll cover on Friday.

]]>February 8, 2012http://www.profsullivan.com/math-131-mwf/2012/2/9/february-8-2012.htmlMary E. Sullivan2012-02-09T16:20:31ZToday we talked about z-scores, percentiles, and quartiles.

The homework is:

  • Chapter 2:  27 - 38
]]>February 6, 2012http://www.profsullivan.com/math-131-mwf/2012/2/6/february-6-2012.htmlMary E. Sullivan2012-02-06T18:56:26ZToday we talked about using the standard deviation:  unusual values, the range rule of thumb, and the Empirical Rule.

The homework is:

  • Chapter 2:  21 - 27
]]>February 1, 2012http://www.profsullivan.com/math-131-mwf/2012/2/1/february-1-2012.htmlMary E. Sullivan2012-02-01T13:51:48ZToday we talked about measures of spread, including the range and the standard deviation.

The homework is:

  • Chapter 2:  15 - 20 (all)

After you feel comfortable using the formula, you may use your TI-83/84 calculator to find the standard deviation.  There are videos on this website demonstrating how to do this.

There will be a quiz on Friday on which I will ask you to compute the standard deviation of a data set using the formula. 

]]>January 30, 2012http://www.profsullivan.com/math-131-mwf/2012/1/30/january-30-2012.htmlMary E. Sullivan2012-01-30T14:32:36ZToday we talked about distribution shapes and measures of center.

The homework is:

  • Chapter 2:  12 - 14 (all)

There will be a quiz on Wednesday on measures of center and notation.

]]>January 27, 2012http://www.profsullivan.com/math-131-mwf/2012/1/27/january-27-2012.htmlMary E. Sullivan2012-01-27T14:21:13ZToday we talked about organizing data using ungrouped and grouped frequency tables.  We also talked about constructing histograms.

The homework is:

  • Read my lecture notes about stem-and-leaf plots and dotplots and complete those sections in the guided notes.
  • Chapter 2:  1 - 11 (all)

There will be a quiz on Monday.

]]>January 25, 2012http://www.profsullivan.com/math-131-mwf/2012/1/25/january-25-2012.htmlMary E. Sullivan2012-01-25T14:19:51ZToday we talked about about sampling techniques. 

Homework:

  • Finish chapter 1 homework**
  • Complete the online class survey located here.

** Please make sure that you use the homework sets that are located by clicking on the homework problems link on the left of this page (not the ones in the textbook.) Remember that solutions are located at the end of the pdf.

 

]]>January 23, 2012http://www.profsullivan.com/math-131-mwf/2012/1/23/january-23-2012.htmlMary E. Sullivan2012-01-23T09:52:00ZWelcome to Math 131: Introduction to Statistics. Today we reviewed the syllabus and talked about about sampling and data.  

Homework: 

  • Chapter 1:  Problem 1** 
  • Complete the online class survey located here.

** Please make sure that you use the homework sets that are located by clicking on the homework problems link on the left of this page (not the ones in the textbook.)  Remember that solutions are located at the end of the pdf.

 

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