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17.In constructing a frequency distribution, the approximate class width is computed asa.(largest data value - smallest data value)/number of classesb.(largest data value - smallest data value)/sample sizec.(smallest data value - largest data value)/sample sized.largest data value/number of classesANS:APTS:1TOP:Descriptive Statistics18.In constructing a frequency distribution, as the number of classes are decreased, the class widthPTS:1TOP:Descriptive Statistics19.The difference between the lower class limits of adjacent classes provides thePTS:1TOP:Descriptive Statistics
Full file at 20.In a cumulative frequency distribution, the last class will always have a cumulative frequency equal toPTS:1TOP:Descriptive Statistics21.In a cumulative relative frequency distribution, the last class will have a cumulative relative frequency equal toa.oneb.zeroc.the total number of elements in the data setd.None of these alternatives is correct.ANS:APTS:1TOP:Descriptive Statistics22.In a cumulative percent frequency distribution, the last class will have a cumulative percent frequency equal toPTS:1TOP:Descriptive Statistics23.Data that provide labels or names for categories of like items are known asPTS:1TOP:Descriptive Statistics24.A tabular method that can be used to summarize the data on two variables simultaneously is calledPTS:1TOP:Descriptive Statistics25.A graphical presentation of the relationship between two variables isa.an ogiveb.a histogramc.either an ogive or a histogram, depending on the type of datad.a scatter diagramANS:DPTS:1TOP:Descriptive Statistics26.A histogram is said to be skewed to the left if it has a