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Authoritative PPT Summary
"Sampling Survey" PPT courseware
Part One Content: Learning Objectives:
1. Understand and master: census, spot check, overall, individual, sample, sample size,
2. Be able to judge whether each investigation is a census or a random inspection, and be able to tell the reasons.
3. Can find from a spot check: population, individual, sample, sample size,
Read it!
The fifth national census
The total population of the country is 1,295.33 million. in:
1. The total population of the 31 provinces, autonomous regions, municipalities and active military personnel in mainland China is 1,265.83 million.
2. The population of the Hong Kong Special Administrative Region is 6.78 million.
3. The population of the Macao Special Administrative Region is 440,000.
4. The population of Taiwan Province, Kinmen, Matsu and other islands in Fujian Province is 22.28 million.
Sample survey PPT, part 2: census and sample survey
In order to collect this data, certain surveys must be conducted. In this lesson, we will discuss two important methods of data receipt:
Census and sample survey
Discuss?
How was the following survey conducted?
A comprehensive survey of all survey objects for a specific purpose is called a census.
A survey conducted on some of the survey objects for a specific purpose is called a sample survey.
Which of the following surveys use a census? What are sample surveys?
1. To find out what shoe size each student in your class wears, survey the class
Answer: Census
2. Understand the service life of TV picture tubes.
Answer: Sample survey
3. Investigate which of all cities in my country are the first batch of coastal open cities.
Answer: Census
4. Survey the average height of seventh graders nationwide.
Answer: Sample survey
Sampling survey PPT, part 3: statistical concepts
In statistics, for the convenience of description, we introduce several concepts:
(1) Overall: The entirety of the objects to be examined is called the overall.
(2) Individual: Each object of investigation that makes up the whole is called an individual.
(3) Sample: A part of individuals taken from the population is called a sample of the population.
(4) Sample size: The number of individuals in the sample is called sample size.
Sample Survey PPT, Part 4: Classroom Questions
Question 1: There are 70,000 students in a province taking the junior high school graduation examination. In order to know the mathematics scores of these 70,000 students, the mathematics scores of 1,000 students were extracted.
Overall: The total math scores of the province's 70,000 students.
Individual: Each student's math score.
Sample: The mathematics scores of 1,000 students are drawn from it.
Sample size: 1000.
Question 2: Name the population, individual, sample and sample size in the following questions?
(1) To examine the vision of seventh-grade students in Luanping County No. 6 Middle School, 100 seventh-grade students were selected for testing.
(2) In order to understand the travel conditions of nearly 1.7 million people in and around our city, 400 investigators visited 10,000 households, distributed 30,000 questionnaires, and conducted survey registration.
What did you gain from this class?
This lesson mainly introduces the two methods of census and sample survey:
A census collects data by surveying the population;
A sample survey collects data by surveying a sample.
Learned the concepts of population, individual samples and sample size.
Keywords: Free download of Hebei Education Edition mathematics PPT courseware for eighth grade volume 2, sample survey PPT download, .PPT format;
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"Sampling Survey" PPT:
"Sampling Survey" PPT Part One Content: Teaching Objectives: Knowledge and Skills: Understand the concepts of census, sample survey, population, individual, and sample, understand the application of census and sample survey, and understand their advantages and limitations in specific problems, Will choose the right one..
"Census and Sampling Survey" PPT courseware 3:
"Census and Sample Survey" PPT Courseware 3 Learning Objectives 1. Understand the significance of census and sample survey, and be able to distinguish between census and sample survey in specific situations. 2. Be able to describe the characteristics of census and sampling surveys, and understand the necessity of sampling. 3. Understand the overall, individual,...
"Census and Sampling Survey" PPT Courseware 2:
"Census and Sample Survey" PPT Courseware 2 Objective Tips Learning objectives: 1. Understand and be able to distinguish between census and sample survey in specific situations; 2. Be able to describe the characteristics of census and sample survey, and understand the necessity of sampling; 3. Understand Population, individual, sample and sample..