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mathematics
introductory statistics exploring the world through data
Questions and Answers of
Introductory Statistics Exploring The World Through Data
Students who have accumulated fewer than 30 units are called Freshmen.a. Create a new categorical variable, named Freshman, that classifies each student in Table 1A as a freshman (less than 30 units)
Explain why the variable Female, in Table 1A, is categorical, even though its values are numbers. Often, it does not make sense, or is not even possible, to add the values of a categorical variable.
Suppose you decided to code living situation using Dorm as the label for the column. How many ones and how many zeroes would there be?
What do the numbers 1 and 0 mean for the variable Female, in Table 1A (which is coded categorical data)? Often, it does not make sense, or is not even possible, to add a categorical variable. Does it
Give an example of another categorical variable we might have recorded for the students whose data are in Table 1A? College Units Acquired Commute Height (inches) Number Living Female Distance
Are the following variables, from Table 1A, numerical or categorical? Explain.a. Ring sizeb. Hair colorc. Height College Units Acquired Commute Height (inches) Number Living Situation Female Distance
Are the following variables, from Table 1A, numerical or categorical? Explain.a. Living situationb. Commute distancec. Number of aunts College Units Acquired Commute Height (inches) Number Living
Table 1A, there are observations on how many people? College Units Acquired Commute Height (inches) Number Living Female Distance (Miles) Hair Color Ring Size of Aunts Situation Brown 9.5 71 5 35
Give an example of another numerical variable we might have recorded for the students whose data are in Table 1A? College Units Acquired Commute Height (inches) Number Living Female Distance (Miles)
In Table 1A, how many variables are there? Commute Distance (Miles) Height (inches) College Units Acquired Number Living Female Hair Color Ring Size of Aunts Situation Brown 9.5 71 5 35 Dorm Black 8
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