Organization of Terms Experimental Design Descriptive Inferential Population Parameter Sample Random Bias Statistic Types of Variables Graphs Measurement scales Nominal Ordinal Interval Ratio Qualitative Quantitative Independent Dependent Bar Graph Histogram Box plot Scatterplot Measures of Center Spread Shape Mean Median Mode Range Variance Standard deviation Skewness Kurtosis Tests of Association Inference Correlation Regression Slope y-intercept
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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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Journal of Experimental Psychology: Human Perception and Performance 1985‚ Vol. I I ‚ No. 5. 640-649 Copyright 1985 by Ihe Am =an Psychological Association‚ Inc. 0096-1523/85/$00.75 Judging the Relatedness of Variables: The Psychophysics of Covariation Detection David M. Lane‚ Craig A. Anderson‚ and Kathryn L. Kellam Rice University Previous research on how people judge the relation between continuous variables has indicated that judgments of scatterplots are curvilinearly related to Pearson ’s
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thirty one. 2. Which digit has the highest value in 27‚541? 3. What is the place value of 3 in 23‚450? 4. How many hundreds are there in 5‚330? 5. How many tens are there in 29‚920? 6. What is the biggest 2-digit even number? 7. What is the odd number next to 395? 8. What comes after 346? 9. Arrange from least to greatest. {32‚ 47‚ 23‚ 73‚ 53} 10. What is the correct symbol to be used in 89 (‚ =) 45? 11. In the expression 5-3=2. What do you call 2? 12. Write on-half in symbols. 13. I am
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Chapter 2 Chapter Notes FREQUENCY TABLE A grouping of qualitative data into mutually exclusive classes showing the number of observations in each class. You can convert class frequencies to relative class frequencies to show the fraction of the total number of observations in each class. BAR CHART A graph in which the classes are reported on the horizontal axis and the class frequencies on the vertical axis. The class frequencies are proportional to the heights of the bars. The most
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1. Jim & Co. produces a single product. It runs an advertising campaign it is sure will differentiate its product from their competitors by making it more attractive. Assuming that Jim & Co. are correct‚ what will happen to the demand for its product and what pricing strategy should it employ? a. Demand will become more elastic and they should lower the price. b. Demand will become more elastic and they should raise the price. c. Demand will become less elastic and they should lower the
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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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Statistical Analysis BU 510 601 2 Credit Hours Fall 2013 Instructor: Shrikant Panwalkar Office phone: (410) 234 9456 Office Hours: By appointment panwalkar@jhu.edu Required Text and Learning Materials Business Statistics in Practice; 6th Edition‚ McGraw-Hill Higher Education‚ ISBN-13 978-0-07-340183-6 (There are other ISBN numbers) Authors: Bowerman‚ Bruce; O’Connell‚ Richard. (the cover shows a third author – Murphree) Please note: 7th edition is available‚ however
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13. In June an investor purchased 300 shares of Oracle (an information technology company) stock at $20 per share. In August she purchased an additional 400 shares at $25 per share. In November she purchased an additional 400 shares‚ but the stock declined to $23 per share. What is the weighted mean price per share?(10%) ANS: $22.91‚ found by 14. The Bookstall‚ Inc.‚ is a specialty bookstore concentrating on used books sold via the Internet. Paperbacks are $1.00 each‚ and hardcover books are
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........................................................................................4 Inleiding..............................................................................................................................................6 1. 2. 3. 4. 5. 6. 7. Trapeziumregel ...........................................................................................................................7 Samengestelde trapeziumregel ...................................................................
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