### 4 videos in "Probability"

## Probability Part 1

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An introduction to some terms in probability and how to determine the probability of several different events.

- What is a probability scale?
- What is the formula for determining the probability of an event?
- What values are possible for the probability of an event?
- What is an expected frequency of an event happening?
- What is the difference between expected and observed frequency or probability?
- If there are 5 red balls, 2 blue balls, and 3 green balls in a bag, what is the probability of drawing a red ball or p(red)?
- If there are 5 red balls, 2 blue balls, and 3 green balls in a bag, what is the probability of NOT drawing a green ball or p(not green)?
- If there are 5 red balls, 2 blue balls, and 3 green balls in a bag, what is the probability of drawing a yellow ball or p(yellow)?
- If there are 5 red balls, 2 blue balls, and 3 green balls in a bag, you pick a green ball and do not replace it in the bag, what is the probability of drawing another green ball or p(green given green)?
- If there are 5 red balls, 2 blue balls, and 3 green balls in a bag, you pick a green ball and do not replace it in the bag, what is the probability of drawing a red ball or p(red given green)?
- Why does p(not e) = 1 - P(e)?
- What are mutually exclusive events?
- When does P(a or b) = P(a) + P(b)?
- What is the probability of rolling a 4 or 6 on a die or P(4 or 6)?
- What are possibility space diagrams?
- If you roll two dice, one red, one blue, and you add the scores to find your total score, why are there 36 equally likely outcomes and what are they?
- What is the probability of rolling a 7 when you roll two dice?
- What is the probability or getting a score greater than 8 when you roll 2 dice?
- What is the probability of rolling a prime number score when you roll 2 dice?
- What are independent events in probability?
- When you toss a coin and roll a die, what is the probability of flipping a head and rolling a 5 or p(head and 5)?

This is a basic introduction to probability and how to calculate some various probability of events. You will get a crash course in some important probability concepts and formulas as well. This is a very good lesson for learning some quick probability concepts.

good you made the video i am inpre-algebra and the next lesson is problimbility