To Do
Calculating Chi Square
Some of you are asking about the calculating the Chi Square statistic – take a look at slides 19 & 20 from the decision tree deck – you’ll see the formula and reasoning. This is a good formula to know for the Exam!
Remember:
- High statistic (low p-value) from chi-squared test means the groups are different
Association Rule Assignment Video
Hi everyone – here’s the solution for the Association Rules : Play recording (6 min)
Final Exam Study Guide
Here is the study guide for the third (final) exam.
The final exam is on Monday, May 2, 2016 from 8AM to 10AM.
Assignment #9 – Association Rule Mining with R
Here is the assignment and an answer sheet to submit (in Word format).
Here is the data file you’ll need [Groceries.csv].
Another note: Make sure you’ve included ALL the attachments (check the assignment instructions) as separate files or you will not receive credit for the assignment. Do not send me a ZIP or RAR file!
This assignment is due April 25, 2016.
In Class Exercise – Association Rule Mining Using R
Here is the exercise.
And here are the supporting files. Remember, download them to your computer by right-clicking and selecting Save As…
In Class Exercise: Computing Confidence, Support & Lift
Here is the exercise.
And here is the answer key.
Weekly Question
Leave your response as a comment on this post by the beginning of class on April 18, 2016. Remember, it only needs to be three or four sentences. For these weekly questions, I’m mainly interested in your opinions, not so much particular “facts” from the class!
Now that the course is just about over, think about what you’ve learned.
- For you, what is the most important takeaway from the course?
- How would you explain what you’ve learned to a future employer in a job interview?
Assignment #8 – Clustering in R
Here is the assignment and an answer sheet to submit (in Word format).
Here is the data file you’ll need [Jeans.csv].
Another note: Make sure you’ve included ALL the attachments (check the assignment instructions) as separate files or you will not receive credit for the assignment. Do not send me a ZIP or RAR file!
This assignment is due April 18, 2016.
In Class Exercise – Clustering in R
Here is the exercise.
And here are the supporting files. Remember, download them to your computer by right-clicking and selecting Save As…
- The R script you’ll need: Clustering.r
- The data file you’ll need: Census2000.csv
Weekly Question #5
Leave your response as a comment on this post by the beginning of class on April 11, 2016. Remember, it only needs to be three or four sentences. For these weekly questions, I’m mainly interested in your opinions, not so much particular “facts” from the class! If you sign in using your AccessNet ID and password you won’t have to fill in the name, email and captcha fields when you leave your comment.
Answer one of the two questions below (not both):
- Name and describe a business question that you could answer using a decision tree. What data would you collect to perform the analysis? Don’t use an example we’ve covered in class.
- What advice would you give someone regarding how to select the right predictor variables for a decision tree analysis?