z = (X − x̄) ÷ s
The formulas
σ/√N or s/√(N−1)? Y on X or X on Y? Which one, when?
POLI 443 · Applied Political Research
Every calculation shown.
Every graph marked.
POLI 443, all 13 sessions, in 3D and fully interactive. Built for students who fear maths.
No sign-up for the free session. Works on any phone.
Try it Slide to find the middle 95%. Drag to turn.
—days to your Interim Assessment window (23 Nov)
—days to first-semester exams (from 23 Jan)
3 of 5questions to answer in 2½ hours. Each one is a calculation.
You follow the lecture. Then the exam asks you to do it.
.4495 .4505
The tables
Which row? Which column? Add 0.5 or subtract it?
no label −1
The graphs
One missing label and the marks are gone.
How a session works
Learn it by doing it.
Turn it in 3D
Slide a value. Watch the curve, shading and numbers move together.
Read the real tables
The exam-hall Table III. Tap the wrong cell and it tells you why.
Calculate, line by line
Line by line, like your script. Mistakes get corrected in red.
Get marked like the exam
Draw the graph, hand it in, get marked out of 10. Like the GA.
What's inside
All 13 sessions, in class order.
The exam roomExam-style questions, marked.
Calculator trainerfx-991 and fx-82, key by key.
Exam-hall toolsTable III, t and χ² tables.
Slide checkSlide typos flagged for you.
“POLI 443 is the course my students panic about most. So I built the course I wish they'd had.”
Full access · 2026/27 first semester
GH¢120
One price, paid once.
No subscription.
- All 13 interactive sessions
- Every graph drill, marked out of 10
- The exam room and calculator trainer
- Access until the end of your exams
- Pay securely through Selar, with Mobile Money or card
Not sure yet? Do Session 2 free first. If it doesn't help, don't buy.
Questions
Is this from the University of Ghana?
No. It's an independent study guide. It follows the POLI 443 topics session by session, but the explanations, drills and practice questions are written fresh, not copied from the course slides.
Will it work on my phone?
Yes. It was designed for phones first, including low-cost Android phones. It also works on a laptop.
How much data does it use?
Very little. Lessons are text and drawings, not video, so a session uses about as much data as opening a few web pages.
Do I still need my calculator?
Yes, and you should use it. The course shows you the key presses for the Casio models students use, so you practise exactly what you'll do in the exam hall.
I'm on the distance programme. Does it cover my course?
Yes. The distance and main-campus versions of POLI 443 cover the same topics.
Can I share my account with a friend?
No. Each account is for one student and shows the owner's name inside the lessons.