years. More than 400‚000 teen girls aged 15–19 years gave birth in 2009(CDC‚ 2009) 47.4% had ever had sexual intercourse 33.7% had had sexual intercourse during the previous 3 months‚ and‚ of these 39.8% did not use a condom the last time they had sex 76.7% did not use birth control pills or Depo-Provera to prevent pregnancy the last time they had sex 5.3% had had sex with four or more people during their life 12%) teens has had oral sex Nursing Diagnosis: Risk of STD infection
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What is Operations Research? Operations Research is an advanced use of analytical technique which is beneficial for decision making. It encompasses a wide range of problem solving techniques in the aim of good decision making. People holding skills in OR (operations research) hold positions in decision making and business analytic and marketing analysis. Operations research is also referred as Management science or Industrial Engineering. With today’s times and changing client demands OR is the
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Chapter 8 29. The travel-to-work time for residents of the 15 largest cities in the United States is reported in the 2003 Information Please Almanac. Suppose that a preliminary simple random sample of residents of San Francisco is used to develop a planning value of 6.25 minutes for the population standard deviation. If we want to estimate the population mean travel-to-work time for San Francisco residents with a margin of error of 2 minutes‚ what sample size should be used? Assume 95% confidence
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Chapter Self Review page 3 3-4 71 The monthly sales for a sample of HiTec Electronic supply stores were organized into a frequency distribution. The mean of weekly sales was computed to be $ 3‚219‚360‚ the median $3‚192‚000‚ and the mode $3‚176‚800. a. Sketch the sales in the form of a smoothed frequency polygon. Note the location of the mean‚ median‚ and mode on the x-axis. - Mode 3‚176‚800 < Median 3‚192‚000 < Mean 3‚219‚360 Therefore‚ b. Is the distribution symmetrical
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Statistics is the study of the collection‚ organization‚ analysis‚ interpretation‚ and presentation of data. It deals with all aspects of this‚ including the planning of data collection in terms of the design of surveys and experiments. The word statistics‚ when referring to the scientific discipline‚ is singular‚ as in "Statistics is an art. "This should not be confused with the word statistic‚ referring to a quantity (such as mean or median) calculated from a set of data‚ whose plural is statistics ("this
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| | |Purpose – The purpose of this paper is to review the literature on the corporat Goverance. | The research purpose of this study is mainly descriptive since the main aim is to describe and to deeply understand the different type 1. Introduction: Traditionally defined as the ways in which a firm safeguards the interests of its financiers (investors‚ lenders‚ and creditors). The modern definition
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dispersion (range and standard deviation) tables graphs scattergrams (positive and negative correlations) correlation coefficients qualitative data content analysis design studies using experiments‚ self-reports and observations‚ and understand and use: aims and hypotheses (directional and non-directional) operationalisation of variables (including independent and dependent variables) pilot studies control of extraneous variables reliability and validity sampling techniques (including
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are two main branches of statistics that include descriptive statistics and inferential statistics.Descriptive statistics gives numerical measures that describes the features of a given set of data. Inferential statistics on the other hand takes a sample of a given population‚ analyses the sample‚ and from it draw conclusions about the population .Malcolm.O.Asadoorian and Demetrius Kantarelis in their book: Essentials of inferential statistics argue that descriptive statistics organize ‚ summarize and
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“Facts are stubborn things‚ but statistics are pliable (Mark Twain).” This summary will address the definitions of statistics‚ types and levels‚ the role of statistics in business decision making‚ and lastly give a few examples in which statistics was used. Statistics According to Investopedia‚ the definition of statistics is “a type of mathematical analysis involving the use of quantified representations‚ models and summaries for a given set of empirical data or real world observations. Statistical
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Statistics in Business Heather Vinson QNT/351 May 14‚ 2013 Babak Memarian Statistics in Business Statistics is the branch of mathematics used to collect‚ analyze‚ interpret‚ and present data. It is used by business owners to make calculated decisions regarding the future of their companies. Types of Statistics There are two types of statistics. Descriptive statistics deal with describing a set of data elements graphically. This type of statistic does not make
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