Key Terms
8.1
Gathering and Organizing Data
- sample
- units
- data
- population
- simple random sample
- systematic random sample
- stratified sample
- cluster sample
- quantitative data
- categorical data
- categorical frequency Distribution
- binned frequency distribution
8.2
Visualizing Data
- proportion
- bar chart
- pie chart
- stem-and-leaf plot
- distribution (of quantitative data)
- histogram
- bar chart for labeled data
8.8
Scatter Plots, Correlation, and Regression Lines
- response variable (dependent variable)
- explanatory variable (independent variable)
- scatter plot
- positive linear relationship
- negative linear relationship
- correlation coefficient
- regression line (least-squares line, line of best fit)