define the variables for the following situations. For each variable, indicate w
ID: 3207408 • Letter: D
Question
define the variables for the following situations. For each variable, indicate whether it is quantitative or qualitative, and independent or dependent, where appropriate.
5. Does the pattern of pet ownership in Durango (dogs only, cats only, both dogs & cats, other) differ from the national pattern reported by the ASPCA? 6. ANASA researcher is working on how big space shuttle hatches (doors) should be to comfortably accommodate astronauts. He randomly selects 100 astronauts-in-training to walk through a newly designed hatch and the traditionally used hatch. The astronauts-in- training rate each hatch from 1 uncomfortable to 5 deally comfortable. The researcher will compare the average comfortable level from each hatch.Explanation / Answer
5. The variable in question is qualitative in nature, because the pattern of per ownership is classified in 4 categories-dogs only, cats only, both dogs & cats, and other. Apart from counting the cases in each categories, and comparing the numbers with the national pattern reported by ASPCA, no other mathematical operations can be performed on the variable.
6. Independent variable is identified as the cause, and dependent variable is identified as an outcome. Here, the independent variable is types of hatch-newly designed hatch and traditionally used hatch, The dependnet variable is comfort level.
The variable type of hatches is qualitative variable, as shuttle hatches can be classified in two categories-newly designed hatch and traditionally designed hatch, and no mathematical operation can be done on the variable.
On the other hand, comfort level is categorical variable, where, comfort level is classified into categories-uncomfortable, comfortable etc, and then ranking of categories (1, 2, ...,5) is done with respect to each other. Apart from counting, judgements related to greater than and less than can be computed on the variable.
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