Publications by Ching-Fang Wu
W1 in-class exercise 2
In-class exercises 2: In the NLSY86 example, does it appear that the trends of reading scores over time (in months) vary between gender and ethnicity? 1 Introduction The data are drawn from the National Longitudinal Survey of Youth (NLSY). The sample observations are from the 1986, 1988, 1990, and 1992 assessment periods. Children were selected ...
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W1 in-class exercise 1
In-class exercises 1：Interpret the figure in the bottom panel of the Chem97 example. 1 Introduction The data set contains the results of examination on A-level chemistry for 31,022 students from 2,410 schools in Britain in 1997. A mean General Certificate of Secondary Education (GCSE) score is derived from all GCSE subjects of the student. The...
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Tutorial：Mixed-effect model
Bliese, P.D., Maltarich, M.A. & Hendricks, J.L. Back to Basics with Mixed-Effects Models: Nine Take-Away Points. J Bus Psychol 33, 1–23 (2018). https://doi.org/10.1007/s10869-017-9491-z 1 Simulation 1: Independent Data ##Set up Independent data set.seed(12532) #使用set.seed函數，()內設定隨機序列數據的起始值 #create vector x...
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Tutorial：Mixed-effect model (Simulation 1)
Bliese, P.D., Maltarich, M.A. & Hendricks, J.L. Back to Basics with Mixed-Effects Models: Nine Take-Away Points. J Bus Psychol 33, 1–23 (2018). https://doi.org/10.1007/s10869-017-9491-z 1 Data Management ##Simulation 1: Independent Data ##Set up Independent data set.seed(12532) #使用set.seed生成隨機序列數據，()內設定起始值 #...
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W12 homework 2
1 Introduction During a 3-week period, subjects played a chess board game called, “Fox & Geese”. Each subject played up to 27 games. The number of moves made by the subject before commiting a catastrophic error (resulting in defeat) was the outcome of interest. The reading scores of these subjects were also collected as a potential covariate....
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W12 homework 1
1 Introduction In a learning task known as a free-recall list, each subject was presented with a list of words, one at a time, for a few second each. After all the words had been presented, the subject was asked to recall as many of the words as possible. On each successive study trial the order of presenting the words differ. Control: 2 trials o...
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W12 in-class exercise2
1 Introduction Twenty-eight postlingually-deafened cochlear implant (CI) users and 26 normal hearing (NH) adults perform a spoken-word recognition task. On each trial, 4 pictures appear on a monitor. The subject hears the name of one of them (e.g., wizard as the target) and clicks on the referent. The competitors, in this case, are: lizard (rhyme...
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W12 in-class exercise1
1 Introduction MNREAD Acuity Charts (Optelec, US Inc.) were used to measure reading speed as a function of print size. MNREAD data were collected from 42 adult observers with normal vision. Reading speed was measured in log word per minute. Print size was measured in in logMAR (related to degrees in visual angle). Source: Cheung, C., Kallie, S., ...
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Week11 in-class exercise3
1 Introduction The dataset is taken from an intervention study on problematic drinking in college students. Alcohol-related problems, as measured by the Rutgers Alcohol Problem Index, were recorded across 2 years (5 time points) for a sample of 881 students. Source: Atkins, D.C., Baldwin, S.A., Zheng, C., Gallop, R.J., & Neighbors, C. (2013). A t...
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Week8 homework 2
1 Introduction The data set days absent contains attendance data on 314 high school juniors from high schools. The response variable of interest is days absent from school. The standardized math score for each student was given as well as the program variable indicating the type of instructional program in which the student was enrolled. Column 1...
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