Answered: Use R language to complete assignment.…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Use R language to complete assignment. Load the Iris dataset and answer the following questions with the help of R code given. State the descriptive statistics, including maximum, minimum, average, median, range, sum and standard deviation for of Sepal length, sepal width, petal length and petal width. Create and show histogram plots of Sepal length, sepal width, petal length and petal width. In the Question 2, Which histogram plots do resemble normal distribution? Discuss. Create and show a scatter plot of sepal width and sepal length. What trend do you see? Discuss. What other data visualization or analysis can be done on this dataset? Give some ideas. library(psych) library(ggplot2) Data(iris) head(iris) psych::describe(iris) # Create a scatter plot ggplot(iris, aes(x = Sepal.Length, y = Sepal.Width, color = Petal.Length, size = Petal.Width, shape = Species)) + geom_point() + scale_color_gradient(low = "blue", high = "red") + labs(title = "Iris Dataset: Four-Dimensional Visualization", x = "Sepal Length", y = "Sepal Width", color = "Petal Length", size = "Petal Width") + theme_minimal() # Basic histogram ggplot(df, aes(x=weight)) + geom_histogram()

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