R Homework

Question 1

Please submit a Rmarkdown (word format) report capturing the following:Use the attached Iris Dataset: iris_exams.csv  (click to download).Provide at least the following in the report for full credit: (1) Understanding the Data:

• The structure of the data and a preview of the data.
• Frequency Distribution. (Frequency Tables & Plots for each variable in the dataset (Barplots/Histograms)). Make sure to capture the skewness and kurtosis. – Provide an interpretation in one paragraph  (no more than 300 words) explaining the distribution of the data.
• Summary Statistics of the Data at least including mean, quartiles, min/max, and standard deviation.

Question 2

Using the mtcars dataset, demonstrate the skills you have learned so far in class and submit a Rmarkdown (word doc) report including the following:

• Develop a hypothesis
  • What is your hypothesis?
  • What columns are IVs
  • What columns are DVs
  • What columns are ignoble (why)
• Check for Errors & Missing Data
• Clean the data
  • How did you deal with NAs
  • How did you deal with outliers
• Check Assumptions using Parametric Tests
  • Additivity
  • Linearity
  • Normality
  • Homogeneity, Homoscedasticity

  Question 3

  Create a bar graph using the attached Iris dataset: iris_exams.csv  (click to download). Compare the Sepal Length of the flower Species. Include the following:

• Main Title
• X and Y-Axis Labels
•  Colors by Species
• Provide an interpretation in one paragraph  (no more than 300 words) explaining the distribution of the data.

Which Species Sepal.Length is greater?

 

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