Definitions Covered Census vs. Sample Observational Study vs. Experiment Placebo Effect Completely Randomized Experiment Control Group Randomization Replication Double Blind

Definitions Covered Nonresponse Truthfulness of Response Faulty Recall Hidden Bias Vague Wording Interviewer Influence Voluntary Response

Definitions Covered Lurking Variable Confounded Generalizing Results Study Sponsor

Definitions

Definitions Bar Graph - These are graphs that can be used to display quantitative or qualitative data

Definitions Clustered bar graph

Definitions Pareto Chart - a bar graph is which the bar height represents frequency of an event. In addition, the bars are arranged from left to right according to decreasing height

Definitions Circle graph or Pie Chart - wedges of a circle visually display proportional parts of the total population that share a common characteristic Cards

Definitions Time-Series Graph - data are plotted in order of occurrence at regular intervals over a period of time Cards

Definitions Time-Series data - Consists of measurement of the same variable for the same subject taken at regular intervals over a period of time Cards

Definitions Stem-and-leaf display - a method of exploratory data analysis that is used to rank-order and arrange data into groups Cards