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Exam Review Day 6Chapters 2 and 3
Statistics of One Variable and Statistics of Two Variable
1 Variable Statistics
Things you need to remember:• How to draw a histogram• How to draw a frequency graph• How to draw a cumulative frequency graph
Sampling
Things you need to remember about sampling:• The difference between a population and a
sample• Sampling techniques (simple random
sampling, systematic sampling, etc.)• Bias in sampling (measurement bias, non-
response bias, etc.)
Measures of Central Tendency
Measures of Central Tendency • Mean• Median• Mode• Outliers - big effect on mean in small sample
Weighted Mean
Measures of Spread
Measures of Spread • Interquartile range• Standard deviation• Variation
Box and Whisker Plot
2 Variable Statistics
Things you need to remember:• Scatter plots and line of best fit• Correlation coefficient, r
Line of Best Fit
Using the method of least squares
y=ax+b
Types of Non-Linear Regressions
Types of non-linear regression:• Exponential Regression• Quadratic Regression• Cubic Regression• Quartic Regression Strength of non-linear regression:• Coefficient of Determination, r2
Cause and Effect Relationships and Critical Analysis
• Types of cause and effect relationships (accidental, presumed, etc.)
• Be able to analyze relationships and think critically