Section 1.3

Integration: Statistics

•Written form•Picture form•Tabular form •Graphical form

The method you choose depends on your objectives.

In mathematics we use all of the above

Median Salary by Degree/Major Subject - All People in All Surveys (United States)

Bachelor's Degree Candidates By curriculum for all types of employers Yearly salary ranges in $Business Accounting 40,000 - 47,500 Business Administration/Management 32,500 - 46,000 Management Information Systems 38,700 - 49,400 Marketing/Marketing Management 31,200 - 42,000Computer Sciences Computer Science 45,000 - 56,500Information Sciences & Systems 38,000 - 51,000Engineering Chemical 52,000 - 57,600 Civil 40,000 - 47,000 Computer 50,000 - 56,000 Electrical/Electronic 49,000 - 56,000 Mechanical 47,000 - 54,240Humanities & Social Sciences Liberal Arts & Sciences 27,000 - 40,000 Psychology 24,000 - 35,000 Sociology 25,000 - 37,000Source: NACE Salary Survey, Fall 2005 report. Data are starting salary offers reported to NACE by colleges and universities nationwide.

Salary Data from Web-Site

Field of Study Avg. SalaryBusiness Accounting $43,750

Buisness Admin $39,250Mgmt Info Sys $44,050Mkt./Mkt Mgmt $36,600

Comp Science Comp Science $50,750Info Systems Info Systems $44,500Engineering Chemical $54,800

Civil $43,500Computer $53,000Elec $52,500Mechanical $50,620

Humanities Lib. Arts $33,500Psychology $29,500Sociology $31,000

1.) Making a Graph using Excel

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Def: The median of a set of data is the middle value. If there are 2 middle values it is the mean (average)of the 2 middle values.

Def: The mode of a set of data is the most frequent value. Some sets have multiple modes and others have no mode.

Def: The mean of a set of data is the sum of all the values divided by the number of values. (average)

1)The chapter 6 test scores are as follows:

72, 98, 64, 84, 82, 80, 87, 93, 95, 85, 83, 82, 78, 77, 91, 83, 85, 80, 82, 92, 74, and 76a) Find the median:

64, 72, 74, 76, 77, 78, 80, 80, 82, 82, 82, 83, 83, 84, 85, 87, 91, 92, 93, 95, 95, 98

b) Find the mode

c) Find the mean

Def: The extreme values are data values that vary greatly from the central group of values

3) Find the mean if the Expenditure per student by state:Alaska $11,147California $8,689Montana $9,973New York $17,750Texas $9,128Utah $7,056

Note: 17,750 is an extreme measure therefore the mean is not representative of the average

Homework

Page 23Problems: 10,11,12,14,16, 22, 23, and 26

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