Publications by Jay Liao
DataM: In-class Exercise 0518 (Dates & Times)
DataM: In-class Exercise 0518: Dates & Times In-class exercise 1. In-class exercise 2. Load and check Plot In-class exercise 3. The data Plot In-class exercise 4. Load and check Data tranformation Data visualization library(dplyr) library(ggplot2) In-class exercise 1. Find out the number of days you have spent at NCKU as a registered student...
1057 sym R (3382 sym/18 pcs) 6 img
DataM: HW Exercise 0511
DataM: Homework Exercise 0511 - Programming HW exercise 1. Download and check Data transformation Data visualization HW exercise 2. The original scipts The modified script HW exercise 3. Method 1: Double for loop Method 2: Sapply (vectorization) HW exercise 4. HW exercise 5. HW exercise 6. Listing 1 Listing 2 Listing 3 Jay Liao 2021-04-17 ...
3343 sym R (10954 sym/49 pcs) 12 img
DataM: In-class Exercise 0511
DataM: In-class Exercise 0511: Programming In-class exercise 1. The original script The modified scripts In-class exercise 2. Load and check The original script The modified script for method 1 In-class exercise 3. The original script The modified script In-class exercise 4. The original script The modified script In-class exercise 5. The or...
7453 sym R (15951 sym/79 pcs) 13 img
DataM: Homework Exercise 0427 (Function)
DataM: Homework Exercise 0427 - Functions HW exercise 1. Question (a): test if any pairs of the five variables: read, write, math, science, and socst, are different in means. Question (b): test if the 4 different ethnic groups have the same mean scores for each of the 5 variables (individually): read, write, math, science, and socst. Question (c...
8137 sym R (17488 sym/64 pcs) 4 img
DataM: In-class Exercise 0427 (Function)
DataM: In-class Exercise 0427: Function In-class exercise 1. In-class exercise 2. In-class exercise 3. Method 1 Method 2 Method 3 Method 4 Method 5 In-class exercise 4. Binning Sorting Counting Aggregating In-class exercise 5. Load and check Apply Splitting library(dplyr) library(tidyr) library(tidyverse) library(ggplot2) In-class exercise 1...
7876 sym R (8897 sym/94 pcs) 1 img
DataM: HW Exercise 0420 (Data visualization)
DataM: Homework Exercise 0420 - Data visualization Exercise 1. Load in the data set and check its structure. Plot the distribution Exercise 2 (Not finished). Exercise 3. Load in the data set and display it Data transformation Plot 1: Lollipop plot with faceting by disciplines Plot 2: Lollipop plot with faceting by countries Future work library...
3252 sym R (3854 sym/9 pcs) 5 img
DataM: HW Exercise 0420 - 2 (Grammar of graphics)
DataM: Homework Exercise 0420 - Grammar of graphics Using R for the examples in "Beyond Bar and Line Graphs: Time for a New Data Presentation Paradigm’ Interpreting the plots Independent data, points not jittered (no overlapping points) Independent data, points jittered Paired or Non-independent Data: 1 Group, 2 Conditions Paired or Non-indepe...
9674 sym R (9974 sym/20 pcs) 10 img 3 tbl
DataM: HW Exercise 0413 (Trellis)
DataM: Homework Exercise 0413 - Trellis HW exercise 1. HW exercise 2. HW exercise 3. HW exercise 4. HW exercise 1. Use trellis graphics to explore various ways to display the sample data from the National Longitudinal Survey of Youth. The data are drawn from the National Longitudinal Survey of Youth (NLSY). The sample observations are from the...
8965 sym R (16748 sym/68 pcs) 24 img
DataM
DataM: Homework Exercise 0413 - Trellis HW exercise 1. HW exercise 2. HW exercise 3. HW exercise 4. Jay Liao 2020-04-20 HW exercise 1. Use trellis graphics to explore various ways to display the sample data from the National Longitudinal Survey of Youth. The data are drawn from the National Longitudinal Survey of Youth (NLSY). The sample ob...
7386 sym R (10032 sym/43 pcs) 20 img
DataM: In-class Exercise 0413 Trellis 2-4
DataM: Inclass Exercise 0413: Trellis 2-4 In-class exercise 2. In-class exercise 3. In-class exercise 4. Jay Liao 2020-04-20 library(dplyr) library(lattice) In-class exercise 2. Create a new student-teacher ratio variable from the enrltot and teachers variables in the data set Caschool{Ecdat} to generate the following plot in which reading ...
4731 sym R (4918 sym/25 pcs) 7 img