Statistics. Please Check.?

(F14)


Identify each of the random variables as continuous or discrete.





a) Speed of an automobile


Continuous





b) The number of doughnuts left in the pantry


Discrete





c) The air temperature of a public park


Continuous





d) The weight of a professional wrestler


Continuous





e) The number of restaurant patrons


Discrete





F(1)


For the information (a) to (e) list the highest level of measurement as ratio, interval, ordinal, or nominal.





A book inventory record contains the following information:





a) Title: More Mysteries


Ordinal





b) Author: Roger Mortimer


Nominal





c) Date of publication: 1998


Interval





d) List price: $25.00


Ratio





e) Number in stock: 6


Ordinal

Statistics. Please Check.?
F14)





think of continuous random variables as anything that can take on any value on a defined interval of the real number line.





think of discrete values as anything that has values that are only points on the number line.





a) continuous


b) discrete


c) continuous


d) continuous


e) discrete








F1)





ordinal - values are only important for a measure of sequence, 1st place, 2nd place...





on a scale of 1 to 10 rate your joy with ....





a Likert Scale, i.e., strongly disagree, disagree, neutral, agree, strongly agree





Nominal - also called categorical, order does not matter. things such, e.g., color, gender.





interval - anything that measure the difference between to measurements. for example the difference between 100 feet and 90 feet is the same as the difference between 70 and 60 feet. Temperature is a good example





ratio - same as interval but with a defined value of 0.





a) I'd say the title is a categorical variable, it's ordinal if used to order the books by title





b) categorical





c) interval





d) ratio





e) ordinal

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