Chapter 2: Descriptive Statistics CHAPTER 2: Descriptive Statistics 2.3 [LO 1] 28 2007 #1 28 71‚273.93 58‚069‚987.70 7‚620.37 59490 87970 28480 Distribution is skewed right. Descriptive statistics count mean sample variance sample standard deviation minimum maximum range Stem and Leaf plot for stem unit = leaf unit = Frequency 2 9 13 4 28 #1 10000 1000 Stem 5 6 7 8 Leaf 99 123446677 0000112444447 1377 Distribution is more normally shaped in 2007. 2.5 [LO 2] a. We have 2
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“No American artist of his era has composed better pieces‚ and not very many can break even with him in the number‚ verse‚ rondeau nor pantoum the about six new structures he has imagined” (Gioia). R.S. Gwynn is that rarest of contemporary writers; he has a comical inclination. He additionally has a feeling of what’s really going on‚ a helpful point of view when going about as a pundit‚ as Gwynn frequently does. R.S. Gwynn was born on May 13‚ 1948 in Eden‚ North Carolina. His dad ran a chain of drive-in
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Truman College Department of Biology Biology 121 Fall ‘14 Francisco Diaz de Leon Assistant Professor Office 2633 Phone: 773.907.4394 Email: fdiaz-deleon@ccc.edu Office Hours: Tuesday and Thursday 8:30 to 11:00 AM; Monday and Wednesday 11 AM to 12 PM; or by appointment. NOTICE: The best way to communicate with me outside the classroom is via email. I do not check phone messages regularly. Course Description: Cellular and molecular biology of the cell. Introduction to biochemistry
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for X3 is 1.968. The R2-value is 0.8047‚ mean square error is 76.87. The second predictor entered into the stepwise model is X1. The estimated intercept is -127.596‚ the estimated slope for X1 is 0.3485 and the slope for X3 is 1.8232. The R2-value is 0.933 and the mean square error is 27.575. The final predictor entered is X4. The estimated intercept is -124.20‚ the estimated slope for X4 is 0.5174‚ the slope for X1 adjusts to 0.2963 and the slope for X3 adjusts to 1.357. The R2-value is 0.9615 and the
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vital statistics of populations studied probability through games of chance‚ gambling | 18th Century | Laplace‚ Gauss | normal curve‚ regression through study of astronomy | 19th Century | Quetelet Galton | astronomer who first applied statistical analyses to human biologystudied genetic variation in humans(used regression and correlation) | 20th Century (early) | PearsonGossett (Student) Fisher | studied natural selection using correlation‚ formed first academic department of statistics‚ Biometrika
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Kolmogorov-Smirnov (K-S) test is based on the empirical distribution function (ECDF). Given N ordereddata points Y1‚ Y2‚ ...‚ YN‚ the ECDF is defined as \[ E_{N} = n(i)/N \] where n(i) is the number of points less than Yi and the Yiare ordered from smallest to largest value. This is a step function that increases by 1/N at the value of each ordered data point. The graph below is a plot of the empirical distribution function with a normal cumulative distribution function for 100 normal random numbers. The K-S test
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The History of statistics can be said to start around 1749 although‚ over time‚ there have been changes to the interpretation of the word statistics. In early times‚ the meaning was restricted to information about states. This was later extended to include all collections of information of all types‚ and later still it was extended to include the analysis and interpretation of such data. In modern terms‚ "statistics" means both sets of collected information‚ as in national accounts and temperature
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Lecture Notes on Introductory Statistics‚ I (P.P. Leung) Lecture notes are based on the following textbook: N.A. Weiss (2012)‚ Introductory Statistics‚ 9th edition‚ Pearson. Chapter 1 The Nature of Statistics 統計本質 §1.1 Two kinds of Statistics §1.4 Other Sampling Designs (其他抽樣方法) Chapter 1 The Nature of Statistics 統計本質 What is Statistics? 何謂統計? From Wikipedia‚ the free encyclopaedia: Statistics is a mathematical science pertaining to the collection‚ analysis‚ interpretation
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World Series 23 times The Uranium isotope used in Nuclear bombs is U235 AOL chat rooms only allow 23 people at a time In the film Airport‚ the mad bomber has seat 23 ***There are exactly 23 charicters‚ numbers and letters‚ on the face of all U.S. coins ***Every 23rd wave crashing on a beach averages twice the size as normal In the film Airplane II‚ the name of the spaceship is XR-2300 230 people died in the conspiracy plagued TWA flight 800 disaster The Unibomber killed or wounded 23 people The
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Unit 23 Principles of Supporting an Individual to Maintain Personal Hygiene 1.1 Explain why personal hygiene is important Keeping your body clean is vital in combating and preventing illness‚ both for yourself and those around you. Washing your hands can prevent the spread of germs from one person to another or from one part of your body to another. Flossing and brushing your teeth can reduce the likelihood of oral and other diseases. 1.2 Describe the effects of poor personal hygiene on health
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