"Probability of Events" PPT Courseware 2

Description

"Probability of Events" PPT Courseware 2

teaching objectives:

1. Further understand the meaning of probability;

2. Feel the characteristics of random phenomena and develop students’ random awareness.

Typical examples

Example 1. The data for sampling and testing of TV sets produced by a certain TV factory are as follows:

(1) Calculate the frequencies of superior products in the table;

(2) What is the probability that the TV set produced by this factory is of high quality?

Knowledge transfer:

1. A shooter shot under the same conditions, and the results are as shown in the table below:

(1) Calculate each frequency of hitting the bullseye in the table;

(2) What is the probability that this shooter will hit the bullseye once he shoots?

2. The number of newborns and the number of male babies in a region within a few years from a certain year are as follows:

(1) Fill in the birth frequency of boys in the table above (if calculated with a calculator, keep the result to the third decimal place);

(2) What is the probability of a boy being born in this area?

Challenge yourself

A certain sub-station needs to grade a new batch of rice seeds based on the proportion of unqualified seeds. Can you help the seed station design a plan using frequency estimation probability method?

practise:

There are n small balls in an opaque box. They are only different in color. There are 2 red balls. Shake the balls in the box well before touching the ball. Pick out a ball at random and note the color. Put it back into the box, and after a large number of repeated ball-touching experiments, it is found that the frequency of touching the red ball is stable at 0.2. Then what value of n can be calculated?

summary:

1. What did you learn in this lesson?

2. What else are you confused about? Let’s talk

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"Probability of Random Events" PPT:

"The Probability of Random Events" PPT Part One Content: Learning Objectives 1. Master the concepts of random events, inevitable events, and impossible events. 2. Correct understanding of the meaning of probability. 3. Understand the relationship between frequency and probability. New Lesson Introduction Problem Situation Wood burning, can...

"Probability of Events" PPT courseware:

"Probability of Events" PPT courseware Learning objectives 1. Understand the meaning of probability, initially estimate probability with frequency, and understand the connection and difference between probability and frequency. 2. Through a large number of experiments, it is felt that as the number of experiments increases, the frequency of a random event will always be at a certain level...

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Update Time: 2024-11-21

This template belongs to Mathematics courseware Qingdao Edition Ninth Grade Mathematics Volume 2 industry PPT template

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