* Descriptive Statistics * What they are (Some examples) * Frequency Distributions * Central Tendency * Mean: Average * Median: Middle Number * Mode: Number that most comes up (rarely used in behavior statistics) * Graphs * Pie Charts * Bar Graphs‚ etc. * What they’re used for * Descriptive statistics aim to summarize a sample‚ rather than use the data to learn about the population that
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How to Lie with Statistics Summary There are some people that rely heavily on the statistical information provided by the media‚ government‚ and other research groups in order to form opinions or come to a conclusion on a particular idea or product. However they fail to realize that a lot of the time the data is manipulated in such a way that leads them to believe something that is not actually the case. Statistics can lie in many ways the first way is by using a sample that has a bias. For instance
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Chapter I Introduction HISTORY The late Florentino Cayco‚ Sr.‚ first Filipino Undersecretary of Public Instruction and illustrious educator‚ conceptualized the birth and administered the growth of Arellano University. This prestigious institution of learning opened in 1938 as the Arellano Law College‚ named after Cayetano Arellano‚ first Filipino chief justice. It closed in December 1941 until March 1945 under the Japanese occupation of the Philippines during World War II. At the end
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ASSIGNMENT: Ethics in Statistics There are a number of possible ways in which unethical behavior can arise in statistics and researchers should steer clear of these. It is relatively simple to manipulate and hide data‚ projecting only what one desires and not what the numbers actually speak‚ thus giving birth to the famous phrase “Lies‚ damned lies and statistics”. However‚ this doesn’t happen all the time and there is no reason not to believe in the conclusions of a statistical analysis (Siddharth
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Research and statistics for managerial decision making Assignment 1 Mohammed Ahmed Ali 0170026 1.1 Four different beverages are sold at a fast food restaurant: soft drinks‚ tea‚ coffee‚ and bottled water. Explain why
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Data Analysis: Analyzing Data - Inferential Statistics Inferential statistics deal with drawing conclusions and‚ in some cases‚ making predictions about the properties of a population based on information obtained from a sample. While descriptive statistics provide information about the central tendency‚ dispersion‚ skew‚ and kurtosis of data‚ inferential statistics allow making broader statements about the relationships between data. Inferential statistics are frequently used to answer cause-and-effect
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probability of an O-ring failure at 63 F? d. What is the 95% confidence interval estimate of the true slope β1 ? 1 2. A research project studied the physical properties of wood materials constructed by bonding together small flakes of wood. The two factors considered were the size of the flakes and species of tree. The sizes of the flakes were S1: 0.15 inches by 2 inches and S2: 0.25 inches by 2 inches‚ and the species of tree used were aspen‚ birch‚ and maple. For each combination of flake size and tree
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personal income‚ the PCE increase by 0.0953 billion dollars (c) Comment on the significance of model (α = 0.05) Hypotheses: H0: β1 =0 H1 : β1 ≠ 0 Decision rule: reject H0‚ if |tcalc|> |t(α/2‚ n-k-1)| Where tcrit = t (0.025‚ 98) =1.9845 Test statistic: t = = = 48.368 Decision: Reject H0 because t calc > t crit Conclusion: There is sufficient evidence to conclude that there is significant relationship between disposable personal income and PCE at 5% level of
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Name: Sazzad Hossain Id: 082 084 0 10 Eng 103.23 For QUIZ How to Prepare for a Job Interview You have just got your degree. You have applied for a fantastic job and are thrilled to get a letter inviting you to attend an interview. Once the euphoria has subsided you begin to feel a little nervous and delf-doubt begins to creep in. People worry that they may make fools of themselves or fall flat on their faces. The job interview is a hurdle that causes many people to panic. It ranks alongside
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BIO 2003 SUMMATIVE ASSIGNMENT 2 Introduction: The report analyses the result of a study on workers from brick and tile industries conducted by the Health and Safety Laboratory (HSL). HSL put down few criteria’s to the workers which being that neither of the workers from the tiles and brick industries should have worked in both the industries and that they did not smoke. The criteria’s put across was an assurance to attain reliable results. The essence of the study lies in detecting any difference
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