PSYCH 100A Lecture 3: Psych100A-2-1
Document Summary
Fatigue in cancer survivors: independent variable and dependent variable. Yoga/education intervention: treatment: random assignment, but not a random sample. Is sample representative for the population external validity: statistics. P value: the outcome due to the random chance. Distribution of scores in the sample (inference) The sample result may or may not re ect something. Categorical: what descriptive statistics/graphs/types of statistical test to used. Tuesday, january 14, 2020: continuous: histograms and box plots, categorical: frequency tables and bar graphs. Describing distributions: shape (symmetry), center(mean, median, mode), spread(variability, range, iqr), Weirdness(outliers: frequency >probability, symmetric/skewed, 5ms, quartiles and iqr, making and interpreting graphs, shape. Symmetry: symmetric or skewed: positively skewed: ooring (mean > median, negatively skewed: ceiling. Variability: the degree to which the data is spread out around the central tendency, range and iqr. q3+1. 5iqr: frequency distribution v. s. probability density. Frequency dist: a listing of each variable x and its frequency.
