"Changing Trends of Random Phenomenon" PPT Courseware 2

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"Changing Trends of Random Phenomenon" PPT Courseware 2

Situation import

Guess: Do you think there is a relationship between the height and weight of teenagers?

Suppose you were asked to study the relationship between height and weight in adolescents. What would you do?

Experimental exploration

Ten boys from our school were randomly selected and their height (unit: cm) and weight (unit: kg) were calculated:

If we study the relationship between the height and weight of this sample, what do students think should be done with this set of data?

1. If you want to establish a coordinate system, how to determine the meaning and measurement unit of the horizontal and vertical axes?

2. In the Cartesian coordinate system, what characteristics did you find in the distribution of points corresponding to their data?

Consolidation exercises

In order to understand the relationship between milk tea sales and temperature, a small store randomly counted and produced a comparison table between the number of cups of milk tea sold in a certain 6 days and the temperature on that day:

1. By sorting and analyzing the data, can you find a suitable straight line representing the relationship between the number of cups of milk tea and the temperature? Please explain why?

2. If the temperature on a certain day is -50C, can you predict the number of cups of milk tea sold in the canteen on that day based on these data?

Classroom extension

Linear analysis of stocks (the fluctuations of stocks are sometimes within a band-shaped area, and an approximate straight line is found to describe the change trend)

There are some random phenomena that cannot be described by linear function models (you can check them online by yourself).

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"Changing Trends of Random Phenomenon" PPT courseware:

"The Changing Trend of Random Phenomenon" PPT courseware learning objective is to use the coordinate system to study the changing trend of certain random phenomena and the correlation between random phenomena. The new lesson introduces the correlation between variables in the interconnected random phenomena in the objective world. Some can...

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Update Time: 2024-11-22

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

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