of the Hypotheses H0: 2 25 (claim) Ha: 2 > 25 (one-tailed right) II. Level of Significance and Critical Value = 0.05 d.f. = 20 -1 = 19 c.v.: 30.144 III. Decision Rule: Reject Ho if 2 value is > 30.144‚ otherwise‚ do not reject Ho. IV. Test Statistics (n 1) s 2 (20 1)(36) 2 27.36 2 V. Decision 25 Do not reject Ho‚ since 27.36 < 30.144. There is enough evidence to support the claim that the sugar content of the yogurt is less than or equal to 25 mg/oz. BUSSTAT prepared by CSANDIEGO
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Statistics and Decision Making A study on the impact of online shopping websites on student’s buying behavior in India. 2013 Lakshmi Muraleedharan Nair TP023857 MSc Global Marketing Management UCMF1210GMM Date: 20/03/2013 Statistics and Decision Making A study on the impact of online shopping websites on student’s buying behavior in India. 2013 Lakshmi Muraleedharan Nair TP023857 MSc Global Marketing Management UCMF1210GMM Date: 20/03/2013 CONTENTS INTRODUCTION
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Research Design and Statistics Concepts Worksheet Concept Application of Concept in Scenario Reference to Concept in Reading Research • Knowable • Unknowable • Researchable USA World Bank will need to know if their new program they want to launch is possible. They know that these types of ventures can be successful and believe their bank is ready. They will need to know more about their customers to be able to move forward. The research firm‚ Best Market Research provided services to
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Chapter 1: Introduction 1. Origin of Statistics: The word Statistics seems to have been derived from Latin word ‘Status’‚ German word ‘Statistik’ or Italian word ‘Statista’. Each of these means “Political State’. In ancient time governments used to collect the information regarding the population & the property of the State. In India an efficient system of collecting official and administrative statistics existed even more than 2000 Years ago‚ in particular‚ during the period of Chandra Gupta
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There are three basic operational rules which help to simplify the use of the sigma notation. 1. For any integer N Operational Rules for Summation N i i N i i N i i i y x y x 1 1 1 2. If c is a constant‚ that is‚ does not depend on the index of summation i‚ then Continue... Nc c and x c cx N i N i i N i i 1 1 1 The graphical representation of data gives us the idea on the shape of the distribution
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Statistics Cheat Sheet Proportion = Frequency x 100 = Percentage Total No | Z score (standardised value)-how many sds from the mean the value liesZ score = data value – mean Standard deviation | Metric Data = ExploreCategory = Frequencies | Bigger sample size will give a narrower confidence interval range (more specific) outliers affect the mean but not the median – this is why the median is preferred here.mean | | Reports -Only give confidence
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Extra Exercise: Estimation and Hypothesis Testing 1. The length (in millimetres) of a batch of 9 screws was selected at random from a large consignment and found to have the following information. 8.02 8.00 8.01 8.01 7.99 8.00 7.99 8.03 8.01 Construct a 95% confidence interval to estimate the true average length of the screws for the whole consignment. From a second large consignment‚ another 16 screws are selected at random and their mean and standard deviation found to be
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Research types Experimental - uses independent (random‚ representative‚ etc.) vs. dependent (observed outcomes)‚ free of confounds. Make causal claims about why things happen‚ prevent bad stuff‚ promote good stuff. “experiments" Correlational - descriptive‚ observational. Does not make causal claims. “studies" Variable types (SS Stevens‚ 1946) Nominal - assign item to category; are discrete / categorical Ordinal - rank order items; are categorical‚ but often treated
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MONTHLY RELEASE Foreign Trade Statistics Bangladesh Bureau of Statistics January.2012 Compilation and dissemination of Foreign Trade Statistics (FTS) is one of the core activities of Bangladesh Bureau of Statistics (BBS). Considering the importance of FTS‚ BBS has been compiling and publishing it on an annual basis since 1973-74. Since February 2007‚ BBS has been publishing Monthly Release on FTS to satisfy the users’ need. It is an outcome of the BBS efforts towards the improvement of FTS. This
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double-counting depreciation‚ other Mfg. overheads‚ SG&A in Sunday’s cost; it distorts the P&L sheet. To correctly show cost structure for decision making‚ there are two different approaches‚ yet each should reach same conclusion. Approach 1: Differential Cost Approach As suggested in case‚ by producing 4 unites on Sunday‚ total depreciation‚ total Mfg. overhead and SG&A will not change. Thus‚ we should only look into accounts that will change out of producing activities on Sunday. Table below
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