1.7 Review Problems 4. (a) measured during the experiment- measurand (b) Fixed throughout the experiment- parameter (c) Not controlled during the experiment- extraneous (d) Affected by a change made by the experimenter- dependent (e) Changed by the experimenter- independent 5. What is the main purpose of the scientific method? The scientific method is used mainly to validate a particular hypothesis or to determine the range of validity of a hypothesis. 6. Classify the following
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DESCRIPTIVE RESEARCH QUESTIONS AND DESIGNS Descriptive research is used to answer descriptive research questions: What is happening? How is something happening? Why is something happening? Examples: • What is the average age at which children learn to walk? • What is the association between birth order and social skills? • How does self esteem differ among adolescents who differ in the timing of their puberty? • Why does school climate influence student achievement?
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method, we test some hypothesis by determining the likelihood that a sample statistic could have been selected, if the hypothesis regarding the population parameter were true. Hypothesis testing or significance testing is a method for testing a claim or hypothesis about a parameter in a population, using data measured in a sample. In this method, we test some hypothesis by determining the likelihood that a sample statistic could have been selected, if the hypothesis regarding the population parameter
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this report let’s look at the analysis of the data. The first information we are going to discuss is customer income. Here is a statistical description of the income of all 50 of the customers that were sampled for this report. Descriptive Statistics: INCOME ($1000) Variable N Mean StDev Minimum Q1 Median Q3 INCOME($1000) 50 43.48 14.55 21.00 30.00 42.00 55.00 Variable Maximum INCOME($1000) 67.00 The information above shows that the average
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SHOULD APPEAR ON THE COVER PAGE ONLY AND SHOULD NOT APPEAR ON ANY OTHER PAGE. BACK GROUND ABOUT MY JOB I work for Los Angeles Probation Department, the problem we’re having at his time is not getting the support of the other agencies to improved statistic gathering processing. The information systems advisory body needs to collaborate with each other to develop this system. This system needs to have access to management analysis tool to evaluate the efficacy of Los Angeles County criminal justice
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Topic: ANOVA Our topic is about the Analysis of Variance(ANOVA). This is use to compare means of 3 or more populations. You may encounter the word treatment. Treatment is a cause or specific source of variation in a set of data. Here are the assumptions: 1. the three or more population of interest are normally distributed. 2. These pop have equal standard deviation [pic]. 3. The sample we select from each of the population are random and independent. Test: F ratio
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1) A high-resolution photograph occupies how much computer storage? Page 266 2 Megabytes 2) Two ________ of storage would be equivalent to the amount of information in an entire research library. Page 266 Terabytes 3) The equivalent amount of all the words ever spoken by human beings is approximately: Page 266 5 Exabytes 4) The systems that use sophisticated statistical analysis to process data are known as: Page 267 Data-mining tools 5) ________ systems are programs that
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were solely asked to answer the question and their answers were not manipulated. 3. In the following scenario what is the statistic and the parameter it would estimate. A recent study of 460 drivers age 70 and over by the National Highway Traffic Safety Administration reported that 75% of those drivers had uncorrected vision problems. * The reported statistic would be 75% of the 460 drivers age 70 and over. Which would be a total of 345 drivers age 70 or older that had uncorrected vision
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to Statistics LEARNING OBJECTIVES The primary objective of chapter 1 is to introduce you to the world of statistics, enabling you to: 1. Define statistics. 2. Be aware of a wide range of applications of statistics in business. 3. Differentiate between descriptive and inferential statistics. 4. Classify numbers by level of data and understand why doing so is important. CHAPTER OUTLINE 1.1 Statistics in
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have worked in the private institutions of higher learning in Malaysia. The results were tabulated via a Statistical Package for Social Science (SPSS) version 16.0 using the exploratory factor analysis, Pearson correlation analysis and descriptive statistics as well as the stepwise regression analysis. The empirical outcome from the analysis conducted confirms that interactional justice does act as a mediating variable in the relationship between performance based pay and job satisfaction in the selected
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