For teachers

How to assign it

• Stable links. Each lesson, notes page, unit sheet and free-response question has a permanent address, such as levlprep.com/statistics/notes/<topic>.html. Links do not expire and need no account.
• Question sets. practice.html?topic=<topic> opens practice on one topic, practice.html?unit=unit-1 on a whole unit. Students get feedback and an explanation for every option. The practice page can also print a set as a worksheet.
• Free-response questions. Each has its own page with the prompt, the data and a printable answer sheet with lined space. Students write, then reveal the rubric and score themselves point by point. Nothing is graded by AI.
• Printing. Each lesson, notes page, unit sheet and free-response question has a Print button. A lesson prints all its parts in one run; a free-response question prints with lined answer space, and its rubric can print on a separate page.
• Google Classroom. The "Share to Google Classroom" button on each of those pages posts the link to your class.

No login for students

Students open a link and start. They need no account, and nothing they do leaves their device unless they choose to sign in. Progress, answers and scores are stored in their own browser, and typed free-response answers stay on the device they were written on.

Privacy, in short: no ads, no cookies, no tracking across other sites, and no new personal data collected from students. The site uses cookieless analytics and sends a short report when a page breaks. Details are on the privacy page.

Access for teachers and classes

Every notes page, the glossary and the unit sheets are free. Teachers can ask for free access to the rest of the course: email [email protected] from your school address. Ask about discounts for classes at the same address.

Free-response questions

• Two fertilizers in a greenhouse Q1: Formulate questions and collect data, 10 points
• A survey about a new bus route Q1: Formulate questions and collect data, 10 points
• Coffee shop seats and revenue: reading regression output Q2: Analyze and interpret data, 10 points
• Transit use by home location: a two-way table Q2: Analyze and interpret data, 10 points
• Wait times at two urgent care clinics Q2: Analyze and interpret data, 10 points
• Exercise and sleep quality: a chi-square test for independence Q3: Inference (a test or an interval), 10 points
• Has nightly homework dropped? A one-proportion z test Q3: Inference (a test or an interval), 10 points
• A fuel additive for city buses Q3: Inference (a test or an interval), 10 points
• Summer jobs: a two-proportion interval and the claims it supports Q3: Inference (a test or an interval), 10 points
• Homework time in online and in-person sections Q3: Inference (a test or an interval), 10 points
• Seeds that sprout: a binomial claim and an experiment Q4: Across several units, 10 points
• On-time flights: a decision rule, its errors and their consequences Q4: Across several units, 10 points

All free-response practice

Alignment with the course framework

The units and topics follow the order of the course framework (Statistics topics only; the BC-only topics are left out), mapped to our lessons. Titles and explanations are in our own words; nothing reproduces the framework's text. The course is in Beta: it has not yet been reviewed by an AP® Statistics teacher.

Skills

Each math topic sits right before the framework topic that first needs it.