school activities. You used mean and median to measure the center of the data‚ and you used the interquartile range (IQR) to measure the spread. When outliers are present‚ the median and IQR are used to measure center and spread because they are unaffected by extreme values. When the data appears to be symmetric and there are no known outliers‚ the mean and standard deviation (another measure of spread) are used. In the past‚ you have used the mean absolute deviation. Deviation can be defined
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Danielle Sedoris November 11‚ 2009 Ecology – Friday Parasitic Crab Lab Background: Mellita quinquiesperforata‚ commonly known as the sand dollar‚ is a familiar urchin on Florida coastlines. The species is flat and disk shaped that nestles into shallow sandy waters to protect itself from waves and predators. Dissodactylus mellitae is a parasitic crab that feeds on the spines of the hosting sand dollar where it remains its entire life. This study was arranged to observe the distribution patterns
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According to the data‚ the population size obtained for Group RG/CL is an outlier in respect to other groups’ population sizes. After two weeks of sampling and counting the population of mealworms‚ a population of 506 mealworms was calculated. A very broad confidence interval was also calculated‚ ranging from 143.58 to 868.42 (Table 1). Although other groups seem to have large confidence intervals‚ they are within a 200-300 limit. The confidence interval calculated for Group RG/CL has about a 700
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038 but the lowest HPI in this cluster. Conclusions: 1. Wealthier People are not necessarily happier: we did not find a relationship between GPD per Capita and HPI‚ or an ideal level of income that generates the highest HPI. 2. Outliers: There are outliers that contradict the common conception that high income implies
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Experiment 1: APPLICATION OF STATISTICAL CONCEPTS IN THE DETERMINATION OF WEIGHT VARIATION IN SAMPLES LEE‚ Hyun Sik Chem 26.1 WFV/WFQR1 ------------------------------------------------- Nov. 23‚ 2012 A skillful researcher aims to end his study with a precise and accurate result. Precision refers to the closeness of the values when some quantity is measured several times; while accuracy refers to the closeness of the values to the true value. The tool he utilizes to prevent errors in precision and
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The final project entails systematic extraction of decision-aiding insights out of a dataset. The project will provide hands-on experience in conducting and interpreting different types of function-wise statistical analysis. The focus of the analysis will be on marketing strategies and analysis-related topics (South University Online‚ 2012). The sample set was examined thoroughly to reveal findings relevant to the marketing strategies and the interpretation of the data. The median income is between
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University of Phoenix Material – Sonya Cargill 11/12/12 Week Five Calculations Read the following scenarios‚ and answer the accompanying questions. 1. Statistics students were asked to fill a one-cup measure with raisin bran‚ then tap the cup lightly on the counter three times to settle the contents. If necessary‚ they were instructed to add more raisin bran to bring the contents exactly to the one-cup line‚ then spread the contents on a large plate‚ and count the raisins. The 13 students
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Analyzing and Interpreting Data Team X QNT/351 Analyzing and Interpreting Data The ultimate goal of descriptive statistics is to describe a set of data‚ identify patterns‚ and draw a conclusion‚ which enables an organization to make effective and informed decisions (McClave‚ Benson‚ & Sincich‚ 2011). The company‚ Ballard Integrated Managed Services (BIMS)‚ a support services company will leverage statistics to gather information on the company’s employees to analyze and identify patterns
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1 (g) No. 2 (g) No. 3 (g) Average (Without Outliers) Trial 1 20 Degrees Watch Glass Empty 19.49 21.206 18.748 Watch Glass and Aspirin Product 20.13 22.089 19.192 Total Aspirin Mass (0.15g Filter Paper) 0.374 0.733 0.294 0.467 Trial 2 50 Degrees Watch Glass Empty 22.268 21.218 21.607 Watch
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[BOUND REFERENCE] Contents Core – Statistical Analysis ................................................................................................................................................. 2 Core – Scattergraph Draw & Interpret (Step 2) ................................................................................................................ 3 Core – Scattergraph Draw & Interpret (Step 2 Continued) .........................................................................
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