Scarecrows Pythagorean Theorem Essay Example for Free

Scarecrows Pythagorean Theorem Essay The Pythagorean theorem is one of the earliest theorems known to ancient civilization. The well-known theorem is named after the Greek mathematician and philosopher, Pythagoras. In the Wizard of Oz, after the Scarecrow gets a brain, he states the Pythagorean theorem. However, he mistakenly says it applies to an isosceles triangle when it applies to a right triangle. He not only says the wrong triangle, he also gets the equation wrong. The Scarecrow says, â€Å"The sum of the square root of two sides of an isosceles triangle is equal to the square root of the third side. † The correct equation for the Pythagorean theorem is, â€Å"The sum of the squares of the two legs of a right triangle is equal to the square of the hypotenuse.† The isosceles triangle is a triangle with at least two equal sides; it also has two equal angles. The Pythagorean theorem is a statement about triangles containing a right angle. A right triangle is a triangle with a ninety-degree angle. With the Pythagorean theorem, you take a triangle with a right angle and make a square on each of the three sides; the biggest square has the exact same area as the two other squares put together. A square root of a number is a value that can be multiplied by itself to give the original number. Here is an example of a square root; the square root of nine is three because when three is multiplied by itself you get nine. To square a number, you just  multiply it by itself, as in the Pythagorean theorem. You can also square negative numbers, when you square a negative number you get a positive answer.  Although the Scarecrow got a brain from the wizard, he didn’t necessarily get the knowledge of having a brain. He messed up the Pythagorean theorem multiple times. He said that it had to do with square roots and isosceles triangles when the correct equation has to do with right triangles and the sum of the squares. References http://jwilson.coe.uga.edu/emt669/student.folders/morris.stephanie/emt.669/essay.1/pythagorean.html http://www.moviemistakes.com/film1418/corrections/page4 http://www.mathsisfun.com/square-root.html

Supermarket Project :: essays papers

Supermarket Project After a quick stop by my place of work on Saturday afternoon, I ventured across the street to the local Albertson’s grocery store. This excursion was an oddity to say the least as I couldn’t recall a time before high school when I was ever in a grocery store before dark. This, I figured, made a very familiar environment seem very alien to my senses. The purpose this was, and I knew I was correct in my decision-making as I found it difficult to locate a parking space that was not already occupied near the store. That was only the beginning of what I knew would be an interesting study of this diverse communal setting. After finally parking about a football field’s length from the entrance of the market, I made my way, in the heat of the day, to the front doors. On my way, my back began to sweat, and by the time I got inside, I could feel a cold liquid running down my back as a result of the blasting cool, crisp air. The temperature contrast was astonishing on either side of the doorway. I continued to walk in the same direction in the store while cold impulses rose through my back. I made my way from front to back about four times when I decided to sit down in the coffee and breakfast lounge. That’s when I took out my notepad and recalled what I had witnessed during my stroll about the isles. First, I recounted the obvious odor of the environment. It was a mix of fresh laundry, potpourri, and crisp fruit amid the gentle breeze of the air to create a manufactured, yet homely, feeling. I also noticed the brightness and contrast of my surroundings. The huge fluorescent lamps, which hung from the high ceiling, illuminated well the white shelves and heavily waxed white and green tile floors. The walls were a dark green and black having many contours that gave a great sense of depth to the entire store. In the area where I sat, the lighting was much more dim, giving a warm, cozy approach to it. I certainly was drawn to it unconsciously for that reason. After realizing the independent variables of this unique place, I took aim at the human role in the store. In this afternoon setting, I found that there were four distinguishable groups of people.

Discussion topic

I really appreciate the way you listed the steps in selecting random samples. I did not come across any steps or rules to obtain a simple random sample. The lottery Is a form of simple sampling. It does not use any method to select numbers other than the population number set. Consecutive numbers can be drawn or number far apart from each other. I would like to know more about the difference between the type of random sampling used in lottery draws versus the sampling method steps you scribed.The only type of selection process in the text book definition states simple random sampling uses selection of elements from the selection frame (Burns, 2011). References Burns, N.. Grove, S. K. , & Gray. J. (2011). Understanding nursing research: Building an evidence-based practice. Maryland Heights, MO: Elsevier/Saunders. Your post brings up the very important fact that the sample size need to be large enough to represent the target population (Ramsey, 2011).Target population size eyeing too s mall is a common problem with random sampling as you have described with Autism ratios. If there were more states Involved with the CDC Autism survey, the results may differ. The question or research being done may not need a large population as well. Random sampling need to have a large enough size, must represent the target population and must truly be random (Ramsey, 2011 Ramsey, D. J. (2011). Statistics for dummies. Hoboken, N. J: Wiley.Cluster sampling Is a productive way to obtain random sampling of a very large population. National restaurant chains test new menu items In this way. When I lived in Ohio, it was a big test market area. Supposedly the population of Ohio was thought to be representative of Midwestern people. Area restaurants such as McDonald's, Taco Bell, and Domino's introduced new menu items in this area to survey their popularity. I do not know what type of demographic data was used to determine that Ohio residents were representative of the Midwestern populat ion.It was nice to get to try the new menu Items before the rest of the country. The first McDonald's salads and Domino's try at breakfast pizzas were yummy. The Taco Bell French fries didn't make it. This was a good example of being part of a large cluster sampling process without ever knowing it. I think you covered all the different types of sampling very thoroughly. I am not sure the term census Is a type of random sampling. Census Is usually a method of attempting to collect date from an entire population (Ramsey, 2011).

The Human Immunodeficiency Infection ( Hiv ) Essay

The human immunodeficiency infection (HIV) has claimed the lives of more than 35 million individuals since its emergence. In 2014, an estimated 3000 individuals in New Zealand was reported to be living with HIV. And, although HIV doesn t discriminate, the brunt of this epidemic’s impact has disproportionately affected specific populaces. Men who have sex with men (MSM) have a higher probability of contracting HIV since the virus is eighteen times more communicable through anal sex when compared with vaginal sex (1). Furthermore, at present, 1 in 15 gay and bisexual men in New Zealand are HIV-positive (2). This, when coupled with the fact that gay and bisexual men comprise only a small proportion of the New Zealand population, means that they are more closely linked, and, consequently, have a smaller pool of potential sex partners, contributing to a faster, more aggressive pattern of transmission amongst MSM. The rate of HIV diagnosis among MSM in New Zealand was low and steady in the late 90s. However, the number of new HIV diagnoses in this population tripled by 2005 (3). Evidently, MSM in New Zealand are more susceptible to new HIV infections today when compared to 20 years ago. The explanations behind the sharp increment seen around 2001 and 2005 are complicated and multifarious, but can be encapsulated into four fundamental foci. The major, overriding reason for the constantly rising number of HIV-positive MSM living in the populace has been the successfulShow MoreRelatedHuman Immunodeficiency Infection ( Hiv )824 Words   |  4 Pages Human immunodeficiency infection (HIV) is the infection which causes the illness, AIDS. Contamination with that infection harms the human body s insusceptible (safeguard) framework and permits life-undermining diseases to create. HIV has no known cure or antibody for counteractive action. 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