KINESLGY 421 Study Guide - Midterm Guide: Statistical Significance, Partial Correlation, Standard Deviation
Document Summary
Lecture 1: physical activity research questions and methods. What is physical activity? running, sports, walking, weight training, gardening, infant activity. People aren"t as active as they used to be. Different ranges from elderly to elite athletes. Environment impact sidewalks location of parks recreation centers. Questionnaires: memory issues, age of participants inexpensive. Direct observation: validation of activity monitors types of activity time intensive accelerometry, objective, expensive. Qualitatively expresses: direction (+ or -, magnitude (0 to 1) +1: perfect/positive (identical z scores), 0: none, -1: perfect/negative (opposite z scores) low low weak negative. Curvilinear direct high non-monotonic- when values of the two variables are positively related within a certain range of values and negatively related in another range. Line of best fit in scatter plots the line that comes as close as possible to as many of the marks as possible. Tells you: direction of relationship, how well the scores on the variables correspond to one another.
