Data Analysis Techniques and Visualization Tips
Explore techniques for managing multiple variables, implementing coplots, understanding Tableau dimensions, handling outliers, detecting clusters, choosing graphical formats, and utilizing visualization methods in data analysis. Discover best practices and tools for optimizing data analysis processes.
Download Presentation
Please find below an Image/Link to download the presentation.
The content on the website is provided AS IS for your information and personal use only. It may not be sold, licensed, or shared on other websites without obtaining consent from the author. If you encounter any issues during the download, it is possible that the publisher has removed the file from their server.
You are allowed to download the files provided on this website for personal or commercial use, subject to the condition that they are used lawfully. All files are the property of their respective owners.
The content on the website is provided AS IS for your information and personal use only. It may not be sold, licensed, or shared on other websites without obtaining consent from the author.
E N D
Presentation Transcript
UNGRADED QUIZ Unit 5
1. When there are too many variables, what can be done? A. Use principal component analysis to combine variables into a few composite scores B. Use generalized regression to toss out unwanted variables C. Use predictor screening to toss out unwanted variables D. All of the above
2. Coplot, also known as faceting, can be implemented in _____ A. JMP B. Tableau C. R D. All of the above
3. Which of the following statements is true? In Tableau A. Dimensions are continuous variables and Measures are ordinal. B. Dimensions are categorical and Measures are ordinal. C. Dimensions are categorical and Measures are continuous. D. Both Dimensions and Measures can accept any data type.
4. Dr. April Fu used a boxplot and a 95% density eclipse to detect and remove outliers. And then he ran a multivariate analysis with 3 variables. Which of the following statements is true? A. Using a box plot is inappropriate because this method is for detecting one-dimensional outlier. B. Using a density eclipse is inappropriate because this method is for detecting bivariate outlier. C. He should use Mahalanobis distance, Robust PCA, or/and normal contour ellipsoids. D. All of the above
5. Which of the following graphs can be used for detecting clusters in a 3- dimensional data set? (Choose the best answer) A. Scatterplot matrix B. Coplot C. Terney plot D. All of the above
6. I want to include a graph into a poster presentation. The graph size will be 20 X 30 Inches. Which graphical format should I use? A. JPEG B. PNG C. GIF D. Vector-based image
7. Which software app cannot accept vector-based graphics? A. Preview in Mac B. Adobe Acrobat C. Microsoft Word D. All can take vector-based images
8. I want to find out the optimal combination of various conditions to obtain the desirable outcome. Which visualization method should I use? A. Linking and brushing B. Color map C. Prediction profiler D. Mesh surface
9. I plotted the cell means in Excel using the line plot. The two lines are parallel. What is the possible explanation (This is a trick question)? A. There is a main effect B. There is an interaction effect C. There is neither main effect nor interaction effect D. Can t tell. Insufficient information
10. I used Mathematica to create a movie showing 4 dimensions. When I played the movie, the change from one frame to the next is almost unnoticeable. What is happening? A. You didn t pay the software license fee. B. Your computer microprocessor is not powerful enough to display the animation. C. There is no 3-way interaction.
Answers (1)D (2)D (3)C (4)C (5)C (6)D (7)D (8)C (9)D (10)C If you could not answer many questions correctly, please review the PowerPoint slides or/and read my book/articles. Please feel free to contact me or come to my office hours if any concept or procedure is unclear to you.
