Normal Distribution Normal distribution is a statistics‚ which have been widely applied of all mathematical concepts‚ among large number of statisticians. Abraham de Moivre‚ an 18th century statistician and consultant to gamblers‚ noticed that as the number of events (N) increased‚ the distribution approached‚ forming a very smooth curve. He insisted that a new discovery of a mathematical expression for this curve could lead to an easier way to find solutions to
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AIM: i)To investigate the dependence‚ of the angle of deviation on the angle of incidence‚ using a hollow prism filled one by one with different transparent fluids. APPARATUS REQUIRED: Drawing board White sheets of paper Hollow prism Different liquids(water‚ kerosene‚ oil‚ spirit etc.) Drawing pins Pencil Half meter scale Thumb pins Graph papers A protractor INTRODUCTION: In optics‚ a prism is a transparent optical element with flat‚ polished surfaces that refract light. The
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Adolescent Years Allison Cain Northeast Texas Community College PSYCH 2314: Human Growth & Development Professor Ubinger October 10‚ 2012 Adolescent Development Adolescent years are the years you find yourself; you make decisions and encounter experiences from those decisions that will be what ultimately determines who you are; your self-definition. You become more and more independent of your family and more dependent on your peers‚ having more close trusting relationships with
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The population standard deviation σ of a discrete random variable ‚ Measure how close a random variable tends to be the population mean μ‚ so you must understand μ before you understand σ If you have a random variable like a bet at a casino or and investment then the standard deviation σ measure the risk‚ if there is a lot of risk then the standard deviation is high The formulas for standard deviation are given below but you should look at the examples first Population mean Population variance
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formula from X to z (where µ = 25 and σ √9 = 3)‚ we have z19 = (19 – 25) / 3 = -2 and z31 = (31 - 25) / 3 = +2 From the area between z =±2 is 2(0.4772) = 0.9554 Therefore the probability that a measurement selected at random will be between 19 and 31 is about 0.95. This area (probability) is shown fir the X values and for the z values. σ = 3 0.95 σ = 1 0.95 X 19 25 31 -2 0 +2 Normal curve showing Standard normal curve
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quartiles; variance; standard deviation. Solution: A sample is a subset of a population. A population consists of every member of a particular group of interest. The variance and the standard deviation require that we know whether we have a sample or a population. 2. The following numbers represent the weights in pounds of six 7year old children in Mrs. Jones ’ 2nd grade class. {25‚ 60‚ 51‚ 47‚ 49‚ 45} Find the mean; median; mode; range; quartiles; variance; standard deviation. Solution: mean = 46.166
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Quiz 4-1 Physical and cognitive development in adolescence Question 1 In the audio news story about high school drop outs (the one that focused on giving Fs)‚ the teacher reported that since she arrived at Robeson _her standards have dropped dramatically_. Question 2 According to the video that you saw on teen pregnancy‚ they suggested that a major difference between Latinas and other ethnic groups was that _Latinas were much more likely to intentionally get pregnant than
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1. a. Express your understanding of physical growth in children. My understanding of the physical growth of children is the growth of bones‚ muscles‚ tendons‚ nerves and organs of which occurs in a predictable pattern. Motor skills tend to develop in the same sequence across all cultures however‚ the mastering of these skills will depend on genetic predispositions and environment. The next is motor development which includes quantitative physiological change‚ and example of this would be increased
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The Physical and Psychological Benefits of Horticulture Therapy with the Aged Horticultural therapy (HT)‚ as defined by the American Horticultural Therapy Association‚ is “a process utilizing plants and horticultural activities to improve social‚ educational‚ psychological and physical adjustment of persons thus improving their body‚ mind‚ and spirit”. Although “Horticultural therapy” was introduced by Rhea McCandliss in 1967‚ using plants to ease discomfort can be traced back to Egyptians. Nowadays
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forward rather than backward. 2. ________________________ is the development or unfolding of traits present in the individual from his hereditary endowment. 3. ________________________is the result of the activities of the child himself 4. ________________________ method uses two or more groups with identical characteristics; one group is given training while the other group is not. 5.________________________is the rate of development that occurs during the pre-natal period and continues throughout
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