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voluntary response bias- occurs when sample consists of people who choose to participate, handle surveys to people in school cafeteria.
undercoverage bias- some segment of population has smaller chance of being represented
Exploring One-Variable Data: 15%‒23% of test questions
• Exploring Two-Variable Data: 5%‒7% of test questions
• Collecting Data: 12%‒15% of test questions
• Probability, Random Variables, and Probability Distributions: 10%‒20% of test questions
• Sampling Distributions: 7%‒12% of test questions
• Inference for Categorical Data: Proportions: 12%‒15% of test questions
• Inference for Quantitative Data: Means: 10%‒18% of test questions
• Inference for Categorical Data: Chi-Square: 2%‒5% of test questions
• Inference for Quantitative Data: Slopes: 2%‒5% of test questions
rank to study:
Exploring One-Variable Data: 15%‒23% of test questions
Probability, Random Variables, and Probability Distributions: 10%‒20% of test questions
Inference for Quantitative Data: Means: 10%‒18% of test questions
Inference for Categorical Data: Proportions: 12%‒15% of test questions
Collecting Data: 12%‒15% of test questions
Sampling Distributions: 7%‒12% of test questions
Exploring Two-Variable Data: 5%‒7% of test questions
Inference for Categorical Data: Chi-Square: 2%‒5% of test questions
Inference for Quantitative Data: Slopes: 2%‒5% of test questions
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