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hierarchical clustering five two-dimensional data points are shown belowxy-043119-166119012-004028033-114017use the distance matrix to perform
the probability density function pdf of x is given byfx 1-x2 if 0 le x lt
1 a search engine site claims that on average one out of five visitors clicks on an ad a if 8 users visit the site what is the
according to thomson financial through january 25 2006 the majority of companies reporting profits had beaten estimates businessweek february 6 2006
the average cost of a gallon of unleaded gasoline in greater cincinnati was reported to be 241 the cincinnati enquirer february 3 2006 during periods
the average cost per night of a hotel room in new york city is 273 smartmoney march 2009assume this estimate is based on a sample of 45 hotels and
the mean number of hours of flying time for pilots at continental airlines is 49 hours per month the wall street journal february 25 2003 assume that
playbill magazine reported that the mean annual household income of its readers is 119155 playbill january 2006 assume this estimate of the mean
the national quality research center at the university of michigan provides a quarterly measure of consumer opinions about products and services the
1 you have a regional country-year dataset over 10 years of 150 total observations within this data you have 25 observations where the ruling party
an internal report issued by the marketing manager of a oil-change franchise claims that the mean number of miles between oil changes is for
a study done at the university of maryland cited in weiss introductory statistics 7th ed 2005 measured the body temperatures of 93 healthy humans on
imagine that a sample of 400 rental units shows that i the distribution of rents paid per month is not described by a normal distributionii that the
the elevator in the math and computer building can stop at one of six oors four riders get on the elevator at the rst oor and the elevator heads up
after analyzing the data the researcher has to test ten hypotheses various tests such as chi square test t test have been developed by statisticians
in order to derive meaningful results from the statistical tables the researcher may use one or more of the followings four stepsathe first step is
under this methods the enumerators are appointed and given training they are provided with schedules containing relevant questions these
the researcher and the respondents do not come in contact with each other if this method of survey is adopted questionnaires are mailed to the
in marketing research field surveys are commonly used to collect primary data from the respondents1through personal interviews the investigator
this methods implies the collection of information by way of investigator own observation without interviewing the respondents while the
the next step is to determine the sources of data to be used the researcher has to decide whether he has to collect primary data ror depend
sequential sampling this is somewhat complex sample design where the ultimate size of the sample is not fixed in advance but is determined according
multi stage sampling this is a further development of cluster sampling this techniques is meant for big inquiries extending to a considerably large l
cluster sampling and area sampling cluster sampling involves grouping the population and then selecting the group or the cluster rather than
quota sampling in stratified the cost of taking random samples from individual strata is often so expensive that interviewers are simply give quota