KEY2STATS provides a collection of learning, assessment, tutoring, data, and computing resources for statistics educators and their students. Our assessment and tutoring feature allows for instantaneous student feedback with question specific hints for students who are struggling. In addition, real-time learning charts and reports are available to help educators adapt instruction to meet the individual needs of their students. Our computing resources integrate real-world data with the RStudio statistical computing platform, allowing all students the opportunity to conduct real-world statistical analysis. Finally, in an effort to foster community, our site integrates a message board for statistics educators looking to share ideas, tips, and insights with other educators worldwide.

KEY2STATS is free. It is funded by the National Science Foundation.

Any educator who teaches statistics or a course related to statistics can register.

Yes! We welcome educators worldwide.

The most important thing for our website is that our assessment items remain secure. This is something we take very seriously. To do this, we need to ensure that all individuals requesting educator access are in fact educators to ensure that assessment items remain secure.

If you appreciate the website, the three biggest things that one can do to help our project is:

1) tell other statistics educators about us

2) add a KEY2STATS link to your website

3) promoting us on Twitter and/or Facebook.

1) tell other statistics educators about us

2) add a KEY2STATS link to your website

3) promoting us on Twitter and/or Facebook.

Simple, you begin by creating your classes. Then, once classes have been made, a unique code is provided for you to give to students while they register. Once your students have registered, using the code you provide automatically adds them to your class.

Our site has a large collection of assessment questions that can be assigned to students. These questions fall into three different categories. The assessments types pertain to:

1. statistics concepts typically found in an introductory statistics course in college or in an AP Statistics course at the high school level.

2. R programming concepts that allow students to become familiar with R statistical programming language.

3. Assessment items that integrate statistics and R concepts together.

1. statistics concepts typically found in an introductory statistics course in college or in an AP Statistics course at the high school level.

2. R programming concepts that allow students to become familiar with R statistical programming language.

3. Assessment items that integrate statistics and R concepts together.

Yes, we are currently building a problem bank of questions that can be used to create custom assignments.

Yes, once assignments have been created, they can easily be shared by teachers across the hall or across the globe.

Students can be asked any of the following question types and the prevalence:

1. Numeric answer (~80%)

2. Multiple Choice

3. Check all that apply

4. Fill-in

5. Free Response

1. Numeric answer (~80%)

2. Multiple Choice

3. Check all that apply

4. Fill-in

5. Free Response

Virtually all questions found in our system have question specific hints associated with them. Thus, when a student is struggling with a problem, he or she has a chance to request help in the form of hints. Most questions have between 2 to 5 hints, and each hint progresses the student closer to the answer. The last hint is always the answer so that the student can move on to the next question.

Yes, our platform provides the option for teachers to assign both release and due dates for assignments.

Yes, late assignments are tracked in the teacher dashboard.

Questions that have answers that are numeric, multiple-choice, fill-in, or check-all-that-apply are worth 1 point each. For numeric answers, the students gets 1 point if he or she answers the question correctly on the first attempt. If the student fails to answer the question correctly, but answers the numeric question on the second or third attempt, 0.5 points is awarded. For multiple-choice, check-all-that-apply, and fill-in, students have only 1 attempt to get full credit. Finally, free response is graded 0, 1, 2, or 3 by the teacher.

Teachers must manually grade all the free response questions in the teacher dashboard section of the website. Each question can be scored 0, 1, 2, or 3.

Absolutely. We provide question specific help on calculating the answer using the TI-83/84 calculator.

No, currently we only provide support for these two platforms. However, if there is another platform that you feel that we should support, please let us know.

No, we have adaptive rounding error. This means that

Yes, the assignments

Yes, the dashboard provides information on the number of hints students use.

First, any time a student uses a hint, he or she automatically gets the question wrong, and their average goes down. Second, teachers can view how many hints are used by each student. Finally, teachers can control the delay between hints, in seconds, to prevent abuse of hints and to promote more active use of the information provided in the hints.

Yes. To encourage students to think through the hints provided, you can implement a timed delay, in seconds, between hints. In the teacher backend, this is located in the top right under settings.

Tutor mode is for meant more for formative assesssments while test mode is more for summative assessments. While using tutor mode, hints are available and the correctness of each answer is given. While using test mode, students are only told that their answer has been recorded, nothing more. In addition, during test mode, no hints are available.

Help pages provide a blend of text, worked examples, and video lessons to help students learn specific concepts.

Help pages are currently being built to cover statistics concepts typically covered in an introductory statistics or AP Statistics course. In addition, our project is building a collection of help pages for introductory R programming concepts to help students learn R and RStudio.

Yes, we have a collection of 8 free textbooks that can be accessed and used at any time by students or teachers.

Yes, you can buy the textbooks for ### and ### on Amazon.com for ### and ### , respecitve.

R is a free open-source statistics package used around the world. It has become arguageable the most powerful statistics package in the world.

For students, learning R, now the world's 6th most powerful programming language gives them authentic statistical programming expereince used by real statisticians.

RStudio is simply a more polished interface for using R. To be clear, when someone is working within RStudio, they are using R. RStudio has many nice interface features that makes it easier for all users, both beginner and advanced, to use R.

No, not at all. 100% of all statistics questions we give, and the tutoring provided can be used without using R or RStudio. For questions where technology is required to answer the questions correctly, we provide R specific hints in combination with TI-83/84 hints.

All registered users get their own individual RStudio accounts. So both teachers and students get their own individual accounts.

No, nothing needs to be downloaded. Everything works within a web browser.

Yes, absolutely. The easiest way to do this is to convert

Yes! We have created a help page here that shows how this can be done.

We have a variety of learning resources to fully support students learning how to use R and RStudio. We have built help pages specifically to help both students and teachers as they learn how to use R and RStudio. In addition, we have a variety of assessment items that teachers can assign to students that can be used to assess proficiency at using R. In addition, each of the assessment questions provides question specific hints on what code is needed to answer the question using R.

It's an AP Statistics review resource that consists of 420 statistics questions specifically created to help AP Statistics students prepare for the AP Statistics exam.

It's 100% free. KEY2STATS.COM is funded by the National Science Foundation.

Yes. Here is a snapshot of past teacher feedback:

"Eric, I cannot tell you how much I appreciate your hard work. I am hearing from more students everyday about how much the reviews (and the hints) are helping them prepare! Thank you so very much!!!" ~ Dori Peterson, AP Statistics Teacher - Stevens High School, San Antonio, Texas

"Thank you, Eric, for a fabulous resource! The questions help students focus their review, and the abundance of assignments is very beneficial. My students love these and I really appreciate all of the efforts you have been putting in. This is a tremendous resource." ~ Steve Geislinger, AP Statistics Teacher - Arcadia High School, Scottsdale, AZ

"Eric, Thank you SO much for suggesting this venue and all your hard work." ~ Dr Joe Oechsle, AP Statistics Teacher - Malvern Prep, Malvern, PA

"Dear Eric, Thank you for sharing this invaluable resource! My students and I are very thankful for it!" ~ Neelamjit Dhaliwal, AP Statistics Teacher - Latin School of Chicago, Chicago, IL

"Thank you Eric. I appreciate the time you have put into this. I expect my students will benefit greatly." ~ Larry Richmond, AP Teacher, Jacksonville High School - Jacksonville, Texas

"Eric, I cannot tell you how much I appreciate your hard work. I am hearing from more students everyday about how much the reviews (and the hints) are helping them prepare! Thank you so very much!!!" ~ Dori Peterson, AP Statistics Teacher - Stevens High School, San Antonio, Texas

"Thank you, Eric, for a fabulous resource! The questions help students focus their review, and the abundance of assignments is very beneficial. My students love these and I really appreciate all of the efforts you have been putting in. This is a tremendous resource." ~ Steve Geislinger, AP Statistics Teacher - Arcadia High School, Scottsdale, AZ

"Eric, Thank you SO much for suggesting this venue and all your hard work." ~ Dr Joe Oechsle, AP Statistics Teacher - Malvern Prep, Malvern, PA

"Dear Eric, Thank you for sharing this invaluable resource! My students and I are very thankful for it!" ~ Neelamjit Dhaliwal, AP Statistics Teacher - Latin School of Chicago, Chicago, IL

"Thank you Eric. I appreciate the time you have put into this. I expect my students will benefit greatly." ~ Larry Richmond, AP Teacher, Jacksonville High School - Jacksonville, Texas

4. The questions are embedded in our site's free web-based assessment and tutoring platform.

Our site is different in that it gives them instant feedback on the correctness of their answers. If they the problem correct, it gives them a "CORRECT" confirmation and they move onto the next problem. Also, if they need help on any question, students can ask for question specific help in the form of hints. Finally, teachers have access to a number of real-time graphics and reports to address issues on a student, question, or class level.

For students who get stuck, our platform is designed to help students work through problems with question specific hints. They may only need 1 hint to get them started, or they may need more hints to help them progress through the problem. Typically, the last hint is the answer.

Yes, the following is a short demonstration from the student's perspective. Feel free to answer correctly or use a few hints.

The KEY2STATS team has created 14 review assignments. All 14 assignments are posted below. Each assignment contains 30 questions each. In addition, each assignment will be a mixture of AP statistics concepts.

Yes, a variety of tools and dashboards are provided so that you may track the progress of individuals and the class as a whole. This information can then be used to address class weaknesses, or to better understand learning gaps for individual students.

Yes, once you have assigned a review assignment, you can then add a date and time that you want it to be completed by. If students are late, the system tracks that for you.

Yes, it is highly recommended that they use a TI-83/84 (or other AP approved calculator) while completing the review assignments. Some questions require that they use their calculator to get to the correct answer.

Yes, the KEY2STATS team made a best effort in trying to make sure that our questions address all major concepts that will be found on the AP exam.

Yes, the questions are accessible on laptop, desktop, tablet, and mobile devices.

Yes. This is the 5th year of the review. The review was previously offered in 2012 and has been used by thousands of students around the country each year since then.

Simply register as a teacher. Once your registration has been completed, make sure you confirm your email address. Once that has been done, the KEY2STATS team will review your registration to ensure that you are a teacher. Once this is confirmed you will recieve an email from the KEY2STATS team allowing you to enter the site. There is an introductory video that walks you step by step through the process to get started!