FRHD 3070 Lecture Notes - Lecture 7: Inter-Rater Reliability, Scatter Plot, Test Anxiety

• School: University of Guelph
• Department: Family Relations and Human Development
• Course: FRHD 3070
• Professor: John Dwyer

Document Summary

Everyday measures: i. e. checking temperature in the morning, check the gas gage to see if it"s full. Abstract concept to something specific i. e. physical activity definition (abstract), go into more detail (concrete) Measurement: sequence of steps or procedures that a researcher follows to obtain a measurement i. e. marble cheesecake recipe (abstract), end product (concrete) Observed score = true score + systematic error + random error. Constructs of disinterest: motivation, test-wise, test anxiety, english proficiency. Random error: grading mistakes, recording mistakes. Different levels of measurement represent different tools. Lower levels: less sophistication i. e. small hammer for small nail. High levels: more sophistication i. e. sledge hammer for big rock. Levels: nominal (least precise) i. e. soccer number of field (doesn"t mean anything, ordinal i. e. strongly disagree strongly agree scale, interval i. e. temperature, ratio (most precise) Get it by looking at a scatter plot i. e. if score low on one variable, score low on the other variable.