What two forms do you give answers to probability questions??
- Decimals
- Fractions
What does $P(\text{experiment})$ mean??
The probability of experiment.
In terms of probability, what is an experiment??
A repeatable process that gives rise to a number of outcomes.
In terms of probability, what is an event??
A set of one or more outcomes.
What is sample space??
The set of all possible outcomes.
2021-01-21
What does it mean for two events to be mutually exclusive??
The two events can’t happen at the same time.
If $A$ and $B$ are mutually exclusive, what is $P(A \text{and} B)$??
$$ 0 $$
If $A$ and $B$ are mutually exclusive, what is $P(A \text{or} B)$??
$$ P(A) + P(B) $$
What would the Venn diagram look like for two mutually exclusive events, $A$ and $B$??
What does it mean if two events are independent??
One event happening does not affect the probability of the other happening.
If $A$ and $B$ are independent, what is the probability of $P(A\text{and}B)$??
$$ P(A) \times P(B) $$
Do mutually exclusive events overlap on a Venn diagram??
No.
Do independent events overlap on a Venn diagram??
Yes.
How could you prove mathematically that two events $A$ and $B$ aren’t independent??
Show
$$ P(A \text{and} B) \neq P(A)\times P(B) $$
2021-02-04
In an experiment calculating the percentage of left-handed people, what would you say instead of right-handed??
Not left handed.
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Metadata
date: 2021-01-12 09:03
tags:
- '@?stats'
- '@?probability'
- '@?year-1'
- '@?public'
- '@?school'
title: Stats - Probability
