Presentation Teresa Yurkunas Texas‚ State and Local Government Pols: 2312 01/25/2015 1 Data Analysis Information 1. Has the average median income for Texas increased or decreased (percentage change) from 2010-2011 to 2012-2013? The income for the state of Texas has increased with a 4.4 percent change from 2010-2011 to 2012-2013. 2. By how much did Texas’ average median income increase or decrease (percentage change) from 2010-2011 to 2012-2013? Texas had an average income of $50‚649 from 2010-2011
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The question: To investigate if there is evidence to suggest that the two operations brick and tile have a difference in accident rates. This type of question involves analysing the data for a difference‚ and so tests such as an equal variance test‚ a normality test and a Mann Whitney test will be undertaken. The meaning and the significance of these tests will be explained and justified later on in the report. Hypothesis Testing: The null hypothesis (Ho) for this investigation is that
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population‚ which is depicted in Table 1. By looking at average or median age‚ it becomes clearer that there is an increase in the aging population. Over the past 50 years‚ the median age of the world’s population has increased by 2.8 years‚ from 23.6 in 1950 to 26.4 in 2000 (Batini‚ Callen‚ McKibbin 2006). The United Nations estimates median age to rise to 36.8 years in 2050. More developed countries are expected to have an increase in median age from 37.3 years to 45.2 years‚ and lesser developed countries
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ratio of ECY is below the median industry ratio. So the ECY’s current 2.2. 2.3. 2.4. 2.5. 2.6. 2.7. 2.8. 2.9. ratio is negative relative to the industry. This situation indicates that ECY may have more liabilities than assets. Quick ratio 2.2.1. Quick ratio is calculated as current assets minus inventories then divided by total current liabilities. From the chart‚ we can see ECY’s quick ratio is below the median of industry. It means ECY’s inventory is less than the median of industry. Therefore
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cash and accounts receivable divided by its current liabilities. This ratio is a more stringent measure of liquidity than the current ratio in that it excludes inventories and other current assets. Pfizer has a quick ratio of 1.78 while the industry median is 1.21. This shows the company does not rely too much on inventory of other assets to pay for short-term liabilities. The current ratio measures a company’s current assets divided by its current liabilities. This ratio indicates the company’s degree
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$448.2 thousand and the median net worth was $93.1 thousand. Which measure of center do you think is more appropriate? A lot depends on what you are looking for here; the mean net worth is the true average worth across the sample. However‚ the median net takes the extremes out of the worth‚ meaning the very rich and the very poor are less impactful on the number‚ and you will get a better middle of the sample worth. For the sake of publishing reports to the public‚ the median net worth is the better
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Random Bias Statistic Types of Variables Graphs Measurement scales Nominal Ordinal Interval Ratio Qualitative Quantitative Independent Dependent Bar Graph Histogram Box plot Scatterplot Measures of Center Spread Shape Mean Median Mode Range Variance Standard deviation Skewness Kurtosis Tests of Association Inference Correlation Regression Slope y-intercept Central Limit Theorem Chi-Square t-test Independent samples Correlated samples Analysis-of-Variance
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v1.0 or later (the latest version is presently available at http://www.opencontent.org/openpub/). Measures of Central Tendency This chapter looks at three different concepts of how we describe a “typical” element of a data set. Mean ● Median ● Mode ● There is no one “best” concept for all cases; we will discuss the advantages and disadvantages of each. Mean ● ● The mean is what is most commonly called the average. If a population is finite‚ of size N‚ we can write the
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no difference in the median between the percentage-damaged cells of the workers from the brick and tile industries is observed. Null Hypothesis for the correlation study also states that there is no correlation between the health effects of the workers and the time period they have worked in the industries. Nonetheless the Alternative Hypothesis (H1) states that the median percentage of damaged cell of the workers in the brick industry is different when compared to the median percentage of damaged
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is expected to advance by 3 percent during the next year. Currently‚ the town has an average price per square foot of $309. This is significantly higher than the Boston Metro average of $263 and represents the more affluent nature of the homes. The median listing price is currently at $865‚000‚ but the sale price is only $705‚000. For investors‚ this represents a huge potential for buying a house at a below-market price and waiting for it to increase in value. Office Space
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