
Using an Internet browser, go to one of the following websites and find a table or list of data that interests you and may help answer a question you have:
. census.gov, the website of the U.S. Census Bureau, click on “Data,” then on “Data Tools & Apps,” and then for example on “American FactFinder” or “Easy Stats”:
. nationsreportcard.gov, the website of the National Assessment of Educational Progress (NAEP), click on “Data Tools” and then on “NAEP Data Explorer;
. cdc.gov, the website of the Centers for Disease Control and Prevention, click on “Data & Statistics”;
. fbi.gov, the website of the Federal Bureau of Investigation, click on “Stats & Services” and then on “Crime Statistics”;
. Olympic.org, the website of the Olympic Movement;
. theharrispoll.org, the website of the Harris Poll.
Provide a link to the data. Write a paragraph about yourquestion and discuss how the data address that question.Include a display of the data to help convey your points.

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Chapter 15 Solutions
EBK MATHEMATICS FOR ELEMENTARY TEACHERS
- Solve the following problem over the interval from x=0 to 1 using a step size of 0.25 where y(0)= 1. dy = dt (1+4t)√√y (a) Euler's method. (b) Heun's methodarrow_forwardNo chatgpt pls will upvotearrow_forwardUse Euler method to solve y' = y + x, h=0.2, y(0)=0, 0 ≤ x ≤ 1. Also, find the exact solution and the absolute error.arrow_forward
- Evaluate = f J dx by using Simpson's rule, 2n=10. 2arrow_forwardUse Euler and Heun methods to solve y' = 2y-x, h=0.1, y(0)=0, compute y₁ y5, calculate the Abs_Error.arrow_forwardUse Heun's method to numerically integrate dy dx = -2x3 +12x² - 20x+8.5 from x=0 to x=4 with a step size of 0.5. The initial condition at x=0 is y=1. Recall that the exact solution is given by y = -0.5x + 4x³- 10x² + 8.5x+1arrow_forward
- B: Study the stability of critical points of ODES: *+(x²-2x²-1)x+x=0 and draw the phase portrait.arrow_forwardB: Study the stability of critical points of ODEs: -2x²+x²+x-2=0 and draw the phase portrait.arrow_forward2/ Draw the phase portrait and determine the stability of critical point: ✗ 00 +2X°-x²+1=0arrow_forward
- study the stability of critical point of oDES: 2 200+ (x² - 2x² - 1) + x=0 and draw the phase portrait.arrow_forwardQ/study the stability of critical point and draw the phase portrait:- to -x-x³ x = 0arrow_forwardB: Find the linearization of: x= ex+y-1 y=-x+xy 26-1 e e-10 at critical points then discuss the application of Hartman theorem.arrow_forward
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