"Data Collation and Representation" PPT courseware

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"Data Collation and Representation" PPT courseware

Part One: Classroom Questions

Question 1

Since liberation, my country's gross domestic product (GDP) has been on an increasing trend. It was only 67.9 billion yuan in 1952, rose to 114.93 billion yuan in 1962, rose to 225.27 billion yuan in 1970, rose to 451.78 billion yuan in 1980, and rose to 451.78 billion yuan in 1990. It rose to 1,854.79 billion yuan, 8,940.4 billion yuan in 2000, 1,854.79 billion yuan in 1990, and 8,940.4 billion yuan in 2000.

(1) Design a statistical table to express this piece of text information concisely;

(2) Design another line statistical chart to visually show this increasing trend;

(3) What conclusion can you draw from the above two charts? Give your opinion.

Features of statistical tables:

Statistical tables can express a piece of text information concisely, but statistical tables cannot intuitively see the increase or decrease trends of things.

How to draw a line chart:

The vertical axis starts from 0, and the vertical axis of the line chart represents the frequency. The maximum and minimum values ​​of the frequency should be found first to determine the unit length.

Question 2

At the 28th Sydney Olympic Games in 2004, the Chinese sports delegation achieved very good results. So, how many medals did our athletes win in total at the Olympic Games? What proportion of the total number of gold medals does the number of gold medals it wins account for?

Data organization and presentation PPT, the second part: Do it

(1) Design a bar chart to show the specific data of the number of gold medals in each country.

(2) Design a fan-shaped statistical chart to reflect the proportion of the number of gold medals in each country to the total number of gold medals this year.

How to draw a bar chart: The width of each rectangle on the horizontal axis is the same, the vertical axis starts from 0, the number represents the number of gold medals, and the height of the rectangle corresponds to the number of gold medals (frequency) on the vertical axis.

How to draw a sector chart: First, calculate the percentage of gold medals in each country to the total. Use a compass and a protractor when drawing the chart (the angle corresponding to 1% is 3.6 degrees).

Data organization and presentation PPT, part three: classroom exercises

practice practice 1

Choose an appropriate chart to represent the following data

(1) Statistical table of flower blooming periods

(2) A person was born with a height of 48 cm. The following table is his growth record:

(3) Among my country’s natural disasters, meteorological disasters account for 57%, agricultural disasters account for 20%, earthquake disasters account for 6%, forest biological disasters account for 5%, geological disasters account for 4%, and other disasters account for 3%.

(4) my country's terrestrial vegetation is rich and diverse, including 212 types of coniferous forests, 36 types of bamboo forests, 113 types of shrubs, and 91 types of meadows.

practice practice 2

The following is a line chart of a patient's temperature record

Look at the picture and answer the following questions:

(1) How many hours does the nurse take the patient's temperature?

(2) What is the highest temperature of this patient? What is the minimum temperature?

(3) What was his body temperature at 12:00 on April 8?

(4) During which period of time did his body temperature drop the fastest? Which period of time is more stable?

(5) What does the horizontal dotted line in the picture mean?

(6) Judging from the body temperature, is the patient's condition deteriorating or improving?

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Update Time: 2024-10-05

This template belongs to Mathematics courseware Hebei Education Edition Eighth Grade Mathematics Volume 2 industry PPT template

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