Slovin’s Formula Sampling Techniques * By Steph Ellen‚ eHow Contributor * When it is not possible to study an entire population (such as the population of the United States)‚ a smaller sample is taken using a random sampling technique. Slovin’s formula allows a researcher to sample the population with a desired degree of accuracy. It gives the researcher an idea of how large his sample size needs to be to ensure a reasonable accuracy of results. * When to Use Slovin’s Formula * If
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study Determine sample size ▪ Slovin Formula: ▪ n = N__ ▪ 1+NE² ▪ Where: n = sample size ▪ N = population size E = margin of error * desired Example: What should be the representative sample size if the population from which the sample will be taken is 10‚000 and the desired margin of error is 2%? Solution: To determine the sample size‚ use the formula; n = ___N__ 1+NE² n = 10‚000
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prevent buckling if the temperature range is -30Cº to +50Cº? I know I use the formula: L = LoT L = ? (Change in length of the slabs. We are solving for this.) = 12e-6 (Coefficient of expansion. I looked it up on page 388.) Lo = 14 m (Initial length of slabs.) T = 30 Cº (50Cº - 20Cº) (Change in temperaure. You only care about the hottest number since you are dealing with expansion.) I then had the formula: L = e14 m 30Cº L = .00504 m L = .50 cm The space between
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Title: Formula of a Hydrate. Objective: Determining the percentage of water and the chemical formula of a hydrate. Background: Water has a polar structure and it has positively and negatively charged parts within each molecule. This gives it a strong attraction toward ions. The ions in some salts attract and form strong bonds with water molecules. These salts‚ when they have absorbed water‚ are called hydrates. Anhydrous salts are salts that can form hydrates but which have had all the water
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specific structural formula which is called " Disney Formula of Success" ( Eisner 114 ). As it is understood by its name‚ the economic success of the company has guaranteed for years with the help of this formula. All of the animated features of Disney Company have this structural production pattern ( Disney Formula of Success) although they differ in so many ways. But one of these animated feature which is called Pocahontas’ differs from the others in the process of using the formula. In this paper
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Kepler’s Laws Towards the end of the sixteenth century‚ Tycho Brahe collected a huge amount of data giving precise measurements of the position of planets. Johannes Kepler‚ after a detailed analysis of the measurements announced three laws in 1619. 1. The orbit of each planet is an ellipse which has the Sun at one of its foci. 2. Each planet moves in such a way that the (imaginary) line joining it to the Sun sweeps out equal areas in equal times. 3. The squares of the periods of revolution of
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The Hubbart Formula Where would a hotel manager start in determining the fair price for a guest room? What is a fair value? This question has daunted innkeepers from the beginning. Charge rates too high‚ and no one will stay with you. Setting rates too low‚ and the owner makes less money. For many years in the beginning of the modern hotel era‚ hotel managers simply guessed. As unscientific as this approach sounds‚ it did work to an extent. After a hotel has been in business
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Microsoft Excel: Formulas‚ Formulas... Northern New York Library Network 6721 US Hwy 11 Postdam‚ NY 13676 877-833-1674 or 315-265-1119 www.nnyln.org Jim Crowley C3 - Crowley Computer Consulting 9148 State Highway 37 Ogdensburg NY 13669 315-394-7008 fax 315-394-7009 www.crowleycomputers.com jim@crowleycomputers.com Description: Excel has hundreds of functions and nobody knows them all‚ but spend some time and learn to create more powerful formulas. Students will dive into decision making functions
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“I know you have more than that!” A typical statement by Coach Jenkins at football. His influence on my life is second to none. He is the kind of coach that inspires me and my teammates to work harder everyday‚ the kind of person who the more you get to know him the more you respect him‚ and the kind of person that will never be far from my heart. Brian Jenkins‚ before becoming a coach and teacher at hononegah‚ played collegiate football and received looks from multiple NFL teams. He did not achieve
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Dictionary of chemical formulas From Wikipedia‚ the free encyclopedia This is a list of chemical compounds with chemical formulas and CAS numbers‚ indexed by formula. This complements alternative listings to be found at list of inorganic compounds‚ list of organic compounds and inorganic compounds by element. Table of contents: A B C Ca-Cu D E F G H I K L M N O P R S T U V W X Y Z & [edit] Tables to be merged Inorganic: A B Ca-Cu G H I L M N O P S Organic: C C2 C3 C4 C5 C6 C7
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