"Finding Probability Using Enumeration Method" Probability Preliminary PPT Courseware 3

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"Finding Probability Using Enumeration Method" Probability Preliminary PPT Courseware 3

Create situations and introduce new lessons

"Touch the ball" test

There are 1 white ball and 1 red ball in a box. They are the same except for the color. Take a ball out of the box, put it back, shake it well, and then take out another ball. In this way, you will get two balls one after another. What is the probability that both balls are red?

think:

(1) How many processes does a test include?

(2) In addition to the list method, are there any other analysis methods?

Explore new knowledge and build models

Example 1 Toss two coins and find the probability of the following events:

(1) Both coins face up;

(1) Both coins are tails up;

(3) One coin faces up and one coin faces up.

Example 2: Roll two dice of uniform texture simultaneously and calculate the probability of the following events:

(1) The points of the two dice are the same;

(2) The sum of the two dice points is 9;

(3) At least one die has a value of 2.

Extend your exploration:

A car passing through an intersection may continue to go straight, or it may turn left or right, if the three possibilities are equal. Three cars pass through this intersection, and find the probability of the following events.

(1) All three vehicles continue to go straight

(2) Two cars turn right and one car turns left

(3) At least two cars turn left

Class Summary: What did we learn in this class? What did you gain from studying?

1. When an experiment involves two factors and there are many possible results, in order to list all possible results without duplication or omission, the list method is usually used.

2. When an experiment involves 3 or more factors, the list method is inconvenient. In order to list all possible results without duplication or omission, a tree diagram is usually used.

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For more information about the PPT courseware "Using the Enumeration Method to Calculate Probability Preliminarily", please click the "Using the Enumeration Method to Calculate Probability ppt Probability Preliminary ppt" tag.

"Calculating Probability Using Enumeration Method" PPT courseware:

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"Calculating Probability Using Enumeration Method" PPT:

"Calculating Probability Using Enumeration Method" PPT Part One Content: Basic Knowledge Question: No matter what event probability we are seeking, we can do a lot of experiments. Finding the frequency to get the probability is universal, but it is really troublesome to find it. Is there a simpler way to find it...

"Finding Probability Using Enumeration Method" Probability Preliminary PPT Courseware 4:

"Finding Probability Using Enumeration Method" Probability Preliminary PPT Courseware 4 Grab 30 Game, the rules are: the first person says 1 or 1, 2 first, the second person has to say one or two numbers next, and then it is the first person's turn one, and then continue to say one or two numbers, so that the two people take turns repeatedly, each...

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Update Time: 2024-11-17

This template belongs to Mathematics courseware People's Education Press Ninth Grade Mathematics Volume 1 industry PPT template

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