The dataframe students contains information on 1000 students, with the columns marks, age, country of origin, study style, ATAR and gender.

Which of the following variables could be represented by a simple barplot?

Note:

Marks are measured 0-100 (from mid semester exam)
Age is number of days from birth
Country of Origin is Australia, China etc
Study Style is: independent or dependent
ATAR is Australia Tertiary Admission Rank (a number between 0 and 99.95)
Gender is Male, Female, NotSpecified etc

Question

The dataframe students contains information on 1000 students, with the columns marks, age, country of origin, study style, ATAR and gender.

Which of the following variables could be represented by a simple barplot?

Note:

Marks are measured 0-100 (from mid semester exam)
Age is number of days from birth
Country of Origin is Australia, China etc
Study Style is: independent or dependent
ATAR is Australia Tertiary Admission Rank (a number between 0 and 99.95)
Gender is Male, Female, NotSpecified etc

BlackTom AI · Accepted Answer

The question asks which variable among the given dataframe could be represented by a simple barplot.
Option 1: Age. Age is a numeric variable representing days from birth. If used as a continuous numeric variable, a barplot is not the typical choice; a histogram or box plot would be more appropriate for showing distribution or summary statistics rather than a barplot which is best for categorical data.
Option 2: Marks. Marks are scores from 0 to 100, another continuous numeric variable. Like age, a barplot would not be the standard visualization here; a histogram, density plot, or box plot would better convey distribution across students.
Option 3: Study style. This variable is categorical with levels such as independent or dependent. Barplots are well-suited for categorical data, displaying the frequency or proportion of students in each category with bars whose heights reflect counts or percentages.
Option 4: ATAR. ATAR is a numeric score between 0 and 99.95. Similar to age and marks, it is a continuous variable, so a barplot would not be the conventional choice; a histogram or violin/box plot would be more informative for numeric distributions.
In summary, only a categorical variable like Study style naturally maps to a simple barplot, while the numeric variables (Age, Marks, ATAR) are better represented with histograms or related distribution-focused plots.

DATA1001/1901 (ND) Revision Quiz 2

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