An Interview Test (Part II)

Day 2

It’s time to review joining data frames. Please answer these questions within the same R markdown from yesterday. Commit after every progression in each question.

Interview Questions 2

Q7. Join the students data frame with grades data frame. Save this data frame with appropriate an appropriate name.

Q8. Of the English majors, who performed the worst on assignment 1?

Q9. Which assignment did the junior engineer students performed the best on average using their average numeric grade? (Hint: Have to use the ungroup() function again)

Q10. Which student level performed the best as Statistics and Mathematics major using all their assignments average numeric grade? (Hint: Have to use the ungroup() function again)

Q11. Join the data frame from question 7 to the assignment data frame. Save this data frame with appropriate an appropriate name.

Q12. Provide a visualization that displays how students perform on exams by major and student level. There are a lot of way to approach this question, however, I am interested in what you are able to create. Describe any trends you notice.

Immanuel Williams PhD
Immanuel Williams PhD
Lecturer of Statistics

My passion is to help people learn…

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