A quantitative variable is the only type of variable that can:Ahave no intermediate valuesBbe used to prepare tablesCassume

1. A quantitative variable is the only type of variable that can:Ahave no intermediate valuesBbe used to prepare tablesCassume numeric values for which arithmetic operations make senseDbe graphed2. A qualitative variable is the only type of variable that:Acannot be graphedBcannot be measured numericallyCcan assume an uncountable set of valuesDcan assume numerical values3.The following table gives the cumulative frequency distribution of the commuting time (in minutes) from home to work for a sample of 400 persons selected from a city.Time (minutes)f0 to less than 10620 to less than 201470 to less than 302200 to less than 402830 to less than 503550 to less than 60400The sample size is: _____The percentage of persons who commute for less than 30 minutes, rounded to two decimal places, is: _____The cumulative relative frequency of the fourth class, rounded to four decimal places, is: _____The percentage of persons who commute for 40 or more minutes, rounded to two decimal places, is: _____The percentage of persons who commute for less than 50 minutes, rounded to two decimal places, is: _____The number of persons who commute for 20 or more minutes is: _____4. The temperatures (in degrees Fahrenheit) observed during seven days of summer in Los Angeles are:78 99 68 91 103 75 85The range of these temperatures is: _____The variance of these temperatures, rounded to three decimals, is: _____The standard deviation, rounded to three decimals, of these temperatures is: _____

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