balance point * Define first quartile to be the median of the observations below the median * Define third quartile to be the median of the observations above the median * The interquartile range IQR is Q3 - Q1 * * Coefficient of Variation: defined as the ratio of SD to the mean‚ has no units‚ usually is expressed as a percentage‚ indicates how large SD is relative to the mean * IQR: Robust measure (same as the median)‚ Has the same units as the observations * S: NOT
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HONORS STATISTICS CH1 In an observational study‚ researchers simply observe characteristics and take measurements‚ as in a sample survey. In a designed experiment‚ researchers impose treatments and controls and then observe characteristics and take measurements. Data from a sample of citizens of a certain country yielded the following estimates of average TV viewing time per month for all the citizens. Answer: Inferential‚ because the statistics are used to make inference about the
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cells‚ and platelets. Blood clots are located in your veins and they usually will block blood flow. When blood clots are in the veins located towards the skin they will cause an itching sensation. When blood clots are located towards the surface of your skin it will usually not end in a life-threating situation. When the blood clot is located in the arm or deep in the thigh is when it becomes dangerous. When blood clots are blocking major veins‚ this is when blood cannot flow to the organs and this
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SPSS ASSIGNMENT #1 Read chapters 1‚ 2‚ and be sure to go through the SPSS tutorial (or “run the tutorial”). Then‚ follow these guidelines.S3 To Enter Data: 1. Click on the Variable View tab in the lower left corner of the screen. In the first box under the column Name‚ type the name you want to give the first variable (i.e.‚ “SCORE1” – NOTE: there are no spaces allowed in the variable name). The name of your variable can be up to eight characters (no spaces a permitted by SPSS in the variable
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guests in Lucky Hotel Distribution table Lucky Hotel QUESTION 2: Use Excel to get the mode‚ mean‚ median and comment on the customer satisfaction levels on the two hotels (including a comparison of the two levels of satisfaction) based on these central tendency data Happy Hotel | | | Mean | 4.723 | Median | 4.5 | Mode | 2.8 | Lucky Hotel | | | Mean | 5.031 | Median | 5.2 | Mode | 5.2 | Central tendency data of the customers’ satisfaction levels on the two hotels
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means the mean is not an accurate description of the data. This is because outliers affect the mean. If a set of data is skewed left‚ the mean will be pulled down the left‚ making it an unreliable number for describing. A resistant number would be the median because outliers do not affect it. Although ABC has the highest mean of viewers‚ I would rank CBS as the most overall successful network. The reason being‚ CBS overall has better ratings that ABC. The only reason ABC has such a high mean is because
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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 the $50‚000 income and the $74‚999 income. The frequency of 449 is the highest between the income level of 50‚000 and 74‚999. The distribution of income is skewed and it is slightly right. The mean age is around 51 with the standard
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Chapter 12: Cardiovascular System 12.1 3 types of blood vessels * Arteries: carry blood away from the heart to the capillaries * Capillaries: permit exchange of material with the tissues * Veins: return blood from the capillaries to the heart. Arteries Wall has 3 layers * Endothelium: inner layer‚ made up of simple squamous epithelium‚ with a connective tissue basement membrane that has elastic fibers. * Middle layer: thickest later and consists of smooth muscle that can
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best to get them situated. Arteriosclerosis‚ Hypertension‚ Aortic Aneurysm‚ Heart Disease‚ Varicose Veins‚ and Chronic Venous Insufficiency‚ Angina‚ and Peripheral Vascular Disease are all problems that can proceed in the cardiovascular system. Arteriosclerosis is a circulatory disease that is caused by fat buildup‚ cholesterol‚ and or other substances in the artery wall. These things make the veins stiffen up and become narrow. Hypertension is an issue when a force of blood pushes against the artery
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specific sample. The Measures of Central Tendency are: • The Mean • The Median • The Mode • The Midrange • The Mean The mean is the sum of the values‚ divided by the total number of values. Sample mean: [pic] where n is the sample size Population mean: [pic] where N is the population size • The Median The median of a data set is the value in the center of the data when the set is arranged in order
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