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Sampling Distributions and Inferential Statistics. Standardized test statistic: statistic − parameter standard error of the statistic. Confidence interval: statistic ± ( critical value )( standard error of statistic ) Chi-square statistic: 2 ∑ ( observed − expected ) 2. χ = expected III.
For example, the AP Stats exam emphasizes Units 1, 3, 4, 6, and 7 more than Units 2, 5, 8, and 9. This is really important information if you have limited time. Here’s a short cheat sheet organized by unit to help you focus even more on those skills that will most likely be tested.
A mathematics competition uses the following scoring procedure to discourage students from guessing (choosing an answer randomly) on the multiple-choice questions. For each correct response, the score is 7. For each question left unanswered, the score is 2. For each incorrect response, the score is 0.
The exam covers the following course content categories: 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.
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- Part (c):
- 3 Substantial Response
- 2 Developing Response
- 1 Minimal Response
- 3 Substantial Response
- 2 Developing Response
- 1 Minimal Response
- 3 Substantial Response
- 2 Developing Response
- 1 Minimal Response
- Intent of Question:
- 3 Substantial Response
- 2 Developing Response
- 1 Minimal Response
- 3 Substantial Response
- 2 Developing Response
- 1 Minimal Response
- Part (a):
The histogram clearly shows the bimodal nature of the distribution of room sizes, but this is not apparent in the boxplot.
Two sections essentially correct and one section partially correct
Two sections essentially correct and no sections partially correct OR One section essentially correct and one or two sections partially correct OR Three sections partially correct
One section essentially correct OR No sections essentially correct and two sections partially correct
Two parts essentially correct and one part partially correct
Two parts essentially correct and no parts partially correct OR One part essentially correct and one or two parts partially correct OR Three parts partially correct
One part essentially correct OR No parts essentially correct and two parts partially correct
Two parts essentially correct and one part partially correct
Two parts essentially correct and no parts partially correct OR One part essentially correct and one or two parts partially correct OR Three parts partially correct
One part essentially correct OR No parts essentially correct and two parts partially correct
The primary goals of this question were to assess a student’s ability to perform an appropriate hypothesis test to address a particular question. More specific goals were to assess students’ ability to state appropriate hypotheses, identify the appropriate statistical test procedure, check appropriate assumptions/conditions for inference; calculate...
Two sections essentially correct and one section partially correct
Two sections essentially correct and no sections partially correct OR One section essentially correct and one or two sections partially correct OR Three sections partially correct
One section essentially correct OR No section essentially correct and two sections partially correct
Two parts essentially correct and one part partially correct
Two parts essentially correct and no parts partially correct OR One part essentially correct and one or two parts partially correct OR Three parts partially correct
One part essentially correct OR No parts essentially correct and two parts partially correct
Because random sampling was used, the results of the sample may be generalized to the population of rental prices for one-bedroom apartments in the city that are listed on this particular website at the time the sample was taken.
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Lesson 2.1 Practice Teachers: We recommend providing additional practice exercises from your AP Stats textbook or from prior AP Stats exams. The following textbook sections and AP exam questions are aligned to the content covered in this lesson. • The Practice of Statistics (AP Edition), 4th-6th editions: section 2.1
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The AP ® Statistics exam tests topics and skills discussed in your high school Advanced Placement Statistics course. If you score high enough, your AP Statistics score could earn you college credit !
