Are these Probability and Conditional Probability notes free?

Yes. The full 4-page Probability and Conditional Probability sheet is free inside CapCompass, which runs in your browser with no account needed.

What does the Probability and Conditional Probability revision sheet cover?

What the test actually asks here, The whole toolkit, one event, equally likely outcomes, not A, the fastest move in the chapter, A or B, any two events, A and B when the two are independent, A given B, the conditional, Or, and, and the overlap, The two-way table this page works from, Worked: a conditional, both ways round, Read the denominator off the sentence, Worked: probability from a frequency chart.

Is this for Digital SAT SAT Math?

Yes, it is written for the Digital SAT SAT Math syllabus.

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Probability and Conditional Probability — Digital SAT SAT Math revision notes

A 4-page visual revision sheet for Probability and Conditional Probability, written for Digital SAT SAT Math. Formulas, diagrams and the traps that cost marks, laid out to be read the night before rather than the term before. Free, and it opens inside CapCompass.

Probability and Conditional Probability revision notes, page 1 of 4 — A preview of page 1 — all 4 pages open full size in the app.

Probability and Conditional Probability in one look

counting, two-way tables, and the one question that decides your denominator

What the test actually asks here

almost every probability question on this test is a counting question wearing a probability coat: find the favourable count, find the right total, divide
the three shapes that keep coming back are simple probability from a list or a bag, probability read off a two-way table, and a conditional probability where the question hands you extra information first
the Math section is 44 questions in 70 minutes, so you have about 95 seconds a question on average. A table question that takes you past two minutes is a question you should have flagged and come back to
there is no negative marking. A blank scores exactly what a wrong answer scores, so every question gets an answer even if it is a guess between two survivors

The whole toolkit

one event, equally likely outcomes P(A)=\#A/\#S
not A, the fastest move in the chapter P(not A)=1-P(A)
A or B, any two events P(A or B)=P(A)+P(B)-P(A and B)
A and B when the two are independent P(A and B)=P(A)× P(B)
A given B, the conditional P(A|B)=P(A and B)/P(B)

Page 1 of 4. The full sheet, all 4 pages, opens free in the app.

What this Probability and Conditional Probability sheet covers

What the test actually asks here
The whole toolkit
one event, equally likely outcomes
not A, the fastest move in the chapter
A or B, any two events
A and B when the two are independent
A given B, the conditional
Or, and, and the overlap
The two-way table this page works from
Worked: a conditional, both ways round
Read the denominator off the sentence
Worked: probability from a frequency chart
Which total goes on the bottom
Two spins, four outcomes
Notation you will see in the options
Words that change the arithmetic
Given
And
Or
Not
The calculator move that pays here
Traps that cost points
Tricks that save time

Open the full Probability and Conditional Probability sheet →Free, works offline, no account needed. All 4 pages, plus a study plan built around your own exam dates.

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