Question
In R, which function from the ggplot2 package would be
best suited for creating a scatter plot with different colors representing different categories?Solution
The geom_point() function in ggplot2 is specifically designed for scatter plots in R. It plots individual points and allows for color differentiation based on a categorical variable, enhancing the visualization by showing relationships or distributions among categories. By assigning the color argument within aes(), each category can be uniquely colored, which makes it ideal for exploratory data analysis and comparing variables across groups. For example, visualizing height versus weight with different colors for male and female categories provides clear visual insight into any category-specific trends. Option A (geom_bar()) is incorrect as it’s used for bar charts, not scatter plots. Option B (geom_line()) is incorrect as it’s intended for line graphs, not individual point plotting. Option D (geom_histogram()) is incorrect because it’s used for histograms, not for scatter plots. Option E (facet_wrap()) is incorrect as it’s for creating small multiples rather than color-coding points.
In a certain code language, 'CHILD' is written as ‘6169248' and 'GUEST' is written as '142153840'. How will 'BOOK' be written in that language?
Find the missing term from the given alternatives:
B: 16 :: D : ?
Select the Venn diagram that best represents the relationship between the following classes.
Blue, Water, Star
Select the Venn diagram that best illustrates the relationship between the following classes.
Electrical Appliance, Refrigerator, Freezer
...
Identify the figure given in the options which when put in place of ‘?’ will logically complete the series.
‘Track’ is related to ‘Athlete’ in the same way as ‘Classroom’ is related to ‘______’.
Select the correct option that indicates the arrangement of the following words in a logical and meaningful order.
1. Lung
2. Kidney
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Which number will replace the question mark (?) in the following number series?
5, 4, 6, 15, 56, ?
In each of the given number-clusters, the number on the right side of = (the equal to sign) is calculated by performing certain mathematical operations ...