Practice problems 1 – Type of variables
1. In the following situations give an example of a parameter and astatistic
a. Political elections
b. Subaru 2020 Forester vehicles c. RUM students
d. Puerto Ricans
2. You are in charge of a local company who wants to obtain meanincome of the company’s engineers to compare with the mean incomeof engineers in the industry. You can either obtain the populationmean (parameter) or a sample mean (statistic) to reach a managerialconclusion (both describing the same property, and assume both arefeasibly possible to get). Which one would you rather use?Explain
3. Determine the type of variable in the following problems(Nominal, ordinal, quantitative). If quantitative state if it isdiscrete or continuous
a. Times power outages occur in Mayaguez Terrace last Decemberb. Level of attraction of a person (de feo(a) aguapi?simo(a))
c. Volume of chocolate by 25 kids sampled in October.
d. Sustained winds of hurricane Irene in the last 24 hours.
e. Placing at a marathon
f. Cell phone ownership (Yes, No) by citizens who are 50 orolder
5. Of the examples above mention one that describes a parameterand one that describes a statistic.
