Publications by yuwenchen
Homework_1123_In Class Exercise
In Class Exercise 1 The data are the responses of a sample of 150 individuals to 9 multiple-choice items from a General Certificate of Education O-level mathematics paper containing 60 items in all. The responses are coded 1 for correct answer and 0 for incorrect. The items appear to test ability in two-dimensional Euclidean geometry. The data ha...
3983 sym R (21847 sym/80 pcs) 18 img
Homework_1109
In class Exercise 1 The data are obtained from two surveys of children’s mental health. The data set consists of 1,428 children who had both parent and teacher responses, and an additional 1,073 children with only a parent response. In the psychiatric literature, these sources of respondents are often referred to as “informants”. A standard...
4355 sym R (10794 sym/49 pcs) 3 img
Homework_1102
In Class Exercise 1 Two measures of bullying behavior have been constructed. The first uses self-report on a 9-item Illinois Bully Scale. The second is peer nomination in which children list any person they perceive as a bully. The total number of nominations a person receives is a measure of bullying behavior. Source: Espelage, D.L., Holt, M.K.,...
4992 sym R (20777 sym/83 pcs) 9 img
Homework_1026
In-class exercises 1 Consider the outcome of a brightness discrimination experiment. On each trial, two patches of light were presented: one was a standatd with an intensity of 35 units, and another was a variable intensity comparison light. The subject was asked to indicate which one of the lights was brighter. Source: Gegenfurtner, K. (1992). P...
5148 sym R (8438 sym/56 pcs) 5 img
Homework_1130_Exercise part1
Exercise 1 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., Legg...
2134 sym R (18536 sym/62 pcs) 21 img