chap01

chap01 - 1-1Chapter OneWhat is Statistics?What is...

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Unformatted text preview: 1-1Chapter OneWhat is Statistics?What is Statistics?GOALSONEUnderstand why we study statistics.TWOExplain what is meant by descriptive statistics and inferential statistics.THREEDistinguish between a qualitative variable and a quantitative variable.FOURDistinguish between a discrete variable and a continuous variable.FIVEDistinguish among the nominal, ordinal, interval, and ratio levels of measurement.SIXDefine the terms mutually exclusive and exhaustive.Goals1-2What is Meant by Statistics?μλΣσβStatistics is the science of collecting, organizing, presenting, analyzing, and interpreting numerical data to assist in making more effective decisions.1-3How meaningful is this data?Weights of women who are 5’6:120, 125, 130, 130, 120, 125, 150, 140,130, 125, 120, 140, 150, 120, 130, 125…..1-4How much more meaningful is this information?The average weight of women who are 5’6 in the state of California is 135The most common weight among the women sampled is 1251-5Who Uses Statistics?Statistical techniques are used extensively by marketing, accounting, quality control, consumers, professional sports people, hospital administrators, educators, politicians, physicians, and many others.1-6Types of StatisticsEXAMPLE 2: According to Consumer Reports, General Electric washing machine owners reported 9 problems per 100 machines during 2001. machines during 2001....
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chap01 - 1-1Chapter OneWhat is Statistics?What is...

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