Exam Review Day 6 Chapters 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 Mean Median Mode Outliers - big effect on mean in small sample

Weighted Mean

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, r 2

Cause and Effect Relationships and Critical Analysis Types of cause and effect relationships (accidental, presumed, etc.) Be able to analyze relationships and think critically