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8.1
Gathering and Organizing Data
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sample
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units
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data
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population
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simple random sample
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systematic random sample
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stratified sample
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cluster sample
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quantitative data
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categorical data
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categorical frequency Distribution
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binned frequency distribution
8.2
Visualizing Data
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proportion
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bar chart
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pie chart
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stem-and-leaf plot
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distribution (of quantitative data)
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histogram
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bar chart for labeled data
8.3
Mean, Median and Mode
8.4
Range and Standard Deviation
8.5
Percentiles
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percentile
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quartile
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quintile
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quantile
8.6
The Normal Distribution
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normal distribution
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68-95-99.7 Rule
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standardized score (
-score)
8.8
Scatter Plots, Correlation, and Regression Lines
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response variable (dependent variable)
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explanatory variable (independent variable)
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scatter plot
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positive linear relationship
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negative linear relationship
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correlation coefficient
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regression line (least-squares line, line of best fit)