Day 3

It’s time to implement a statistical technique on the data. Please answer today’s question within the same R markdown from the first day. Commit after every progression in each question.

Interview Question 3

Q13. Using the data frame from question 11 and consider only freshmen 2nd exam scores (Hint: investigate the assignment_id variable) and implement One-Way ANOVA in which you would like to determine if the populations means of performance on the exam (numeric_grade) are the same across major. Answer the following questions to be able to fully grasp the material.

a. Create the data frame that will allow you to answer the statistical question.

b. What is the explanatory and response variables?

c. Write the null and alternative hypotheses?

d. Summarize (Hint: find sample size, mean, standard deviation) and Visualize Data (Hint: box plot and make it look professional).

e. Perform and interpret the analysis.