I am facing the same issue. It partly is because of different layouts on mobile and web versions. Also in the iOS app, in the search we can look up topics but in the android version, we can only look up individual videos and exercises

Look up hight school part that says hight school in math by grade section or here is one https://www.khanacademy.org/math/statistics-probability/displaying-describing-data/more-mean-median/v/comparing-means-and-medians.

i am facing a different issue

I have the same problem. Not able to find the statistics course on Android app. So frustrating. Suggest you to comment this same message on the play store.

Facing the same issue. Statistics-and-Probability course is not available in android app. Few videos of Probability and Statistics available under Precalculus section in android app.

I just looked on the Android app on my smartphone. I have located Statistics and probability. Bear in mind, I am using this on a smartphone. Android tablet availability may be different.

Here is how to find it.

1. Open your Khan Academy Android app. (If it is already open, I suggest closing it and reopening it to start with a clean slate.

2. You should be at a page called Explore. Scroll down on this page to see Math. (It is not that far down, so if you have a fairly large screen, you may see it when you first open the app.) When you get to Math, only the first few icons, Early math and then some low elementary school grades, will be displayed. There are also the words "See all" followed by an arrow on the right hand side of the screen.

3. Click on "See all" or its arrow. You will now get a list of all Math courses, Scroll down in this list. For me, Statistics and probability is in the third screenful of courses, with Trigonometry just above it and High school statistics right below it. (AP Statistics is just below High school statistics.)

If you still don't see it, you may have an older version of the app installed. I posted recently on how to determine this and how to get an updated app. I'll find it and link to it here. Also, if you posted here a while ago, the app may have been updated on your device. Please check again if you're still interested.

The version I have is 2.7.0, updated on March 28, 2018. But this version is known to have issues and will only work for playing videos, not for doing practice exercises or reading articles. The last good version I had was 2.6.5, updated on March 14, 2018. You can check what your version is as follows. Please note that I am not an Android "guru" and can't provide help on such things on how to get into the Google Play Store or how to Update an app that isn't the latest version and doesn't appear to have an update available.

1. Go into Google Play Store. (There is probably an icon for this on the home page/desktop of your phone.)

2. On the Google Play Store home page, in the menu denoted by what I have come to think of as a universal menu icon (three horizontal lines) in the upper left corner, choose My apps & games.

3. On the My apps & games page, choose Installed. But before you do this, look in the Updates tab (which is my default tab on this page and may be yours, too) and look in the Updates available list. If you see Khan Academy listed there, chose the UPDATE button next to it. You won't need to follow the remaining steps if you find Khan Academy here. On the other hand, you may want to hold off until the March 28 version is superceded by a corrected one, unless you are only interested in watching videos right now. So if you want to see the version and updated date, keep going through these instructions.

4. Scroll down to Khan Academy in the alphabetical listing. (My phone displays this as a list in alphabetical order. I don't know if this is the only option, so if there are other options, and you are using one of them, you may have to look differently for Khan Academy.)

5. Once you have found Khan Academy, click on the left side of the list (NOT on the OPEN button).

6. On the page for Khan Academy, scroll down past the UNINSTALL/OPEN buttons, various icons describing things (such as number of downloads), a short app description, and the WHAT'S NEW information until you see READ MORE.

7. Click on READ MORE.

8. Scroll down on the Read More page to the very bottom. You should see two columns of information. The first one in the left column is "Version". The first one in the right column is "Updated on". If the version is earlier than 2.6.5 and/or the updated date is earlier than Mar. 14, 2018, I recommend that you update your version. But you may want to hold off until the March 28 version is superceded by a corrected one, unless you are only interested in watching videos right now.

9. Close the Read More page by clicking on the X in the top left corner.

10. I'm not sure how to force an Update for an app that's not in the Updates available list, but there may be an UPDATE button alongside the UNINSTALL and OPEN buttons.

Six months later since the last answer and 2 years since the question, AP Statistics is still missing in (at least) the Android App (there's Trigonometry and High School Statistics yes, but no AP Statistics anywhere)

I have version 5.1.1.updated a few days ago...

Sigh...

Love the web course though.

I just checked my Androd app to see if AP Statistics and Statistics and probability are still there. I actually used them in the past couple of months on this platform. And indeed they still are, in version 5.1.1.

I suspect the problem that Constantin Mart and possibily others are having is that one or both of these courses are not made available in their country and/or language. I am in the United States, using Engligh. I do not know how to set my location or my language in Khan Academy or whether this is done in the app, elsewhere on your Android device, or as a profile option that has to be updated on the Khan Academy website.

Constantin Mart and anyone else having this problem, I suggest that you use Report a Problem on the top of this page (located to the right of center) to get specific help from someone at Khan Academy. Specifically mention your language and location and be sure to ask if you are not seeing these courses because of one of these settings. If they reply back that this is intentional, then ask in reply if these can be made  available to you in your country. The language issue may be more difficult to overcome because these courses may need to be translated to your language.

In addition, if they reply that these courses have not been made available to your country, also ask in reply to their reply how to change your country setting.

Particularly in the case of AP Statistics, the organization that owns the AP trademark may limit the availability of this course to certain countries and/or languages.

Thanks for your reply, it made sense the problem was related with language settings (what an ***** English I have that you noticed it's not my mother tongue just by looking at mere 4 written lines...). 

My Khan Academy app I have is in English, but the phone OS was in Spanish... 

So, I've changed the language to American English and... voila! The AP Statistics Course shows up right where you said! 

So the limitation seems to be exclusively related with this... At least for Spain... 

Hope it helps other too. And thanks a lot! 

If anyone is still having this issue on iPhone, go to Settings > General > Language and Region. and change the region to US and then you will see Statistics and Probability course in Math section