Estimating Large Numbers

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Presentation transcript:

Estimating Large Numbers Analyzing Numerical Data

Examine the following pictures of outdoor events Examine the following pictures of outdoor events. How would you estimate the crowd size? Speak to your shoulder partner. Speak to two more fellow classmates.

Counting the number of people at a concert or a play maybe rather simple because you can count the tickets sold. However, finding the number of people attending an event where tickets are not required, such as a parade, a political rally, or a protest, is rather difficult and not very exact. For a political party knowing the number of people attending it is rather crucial and relevant information.

To give you an idea of how this kind of problems are solved in real life lets do the following whole group activity. How many students fit in... a. Draw a square on the floor that is 4’ by 4’. b. Students will step in the square, and answer the following questions.

How many students were able to fit in? Explain what relationship exists between the area occupied by your peers and the number of students standing inside the square.

Using the ratio found in the previous questions answer the following Using the ratio found in the previous questions answer the following. Imagine you are attending El Paso HS home coming parade. How many students will be able to fit in the sidewalk by Schuster Ave. to watch the parade? How are you going to figure it out? Share your answer and the method you used to answer the question. What information do you need to solve the problem? Use an internet browser to look for the information that you need and answer the question.

Now imagine you are asked to estimate the number of people at Time square in new years eve, or imagine that you are asked to calculate the number of people that attended the one million men march. What would you do? As a general rule, people in charge of finding the answer to this kind of questions use the "rule" that states that the average area a standing person occupy is 2 sq. ft. With this new piece of information answer the following questions

Estimate the size of a crowd that will fit in a 2 mile long sidewalk (assume the sidewalk is rectangular) and it is 20 feet wide. Be prepare to share your answer and the steps that you follow to answer this question. Investigate the dimensions of Time Square in New York using any internet browser, how many people could fit there?

If the area that a person occupies is 2 sq. ft If the area that a person occupies is 2 sq. ft. then what would be the area occupy by an average person in square centimeters? In square meters?