2/8 (Friday) Standard Deviation cont’d Example: Amount of money earned by new immigrants Sample: 12‚ 15‚ 16‚ 20‚ 25‚ 36‚ 40 Step 1: Find the mean * x̄=164/7 * mean is 23.4 Step 2: Find how much each observation deviates from the mean * 12 - 23.4 = -11.4 * 15 – 23.4 = -8.4 * 16 – 23.4 = -7.4 * 20 – 23.4 = -3.4 * 25 – 23.4 = 1.6 * 36 – 23.4 = 12.6 * 40 – 23.4 = 16.6 * Note: all observations below mean will be negative‚ all above will be positive Step
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Step 1- Identify the problem Develop a problem statement- What are you going to investigate (use the 6 characteristics of a good problem statement) 1. Be interested in the problem 2. Have a manageable scope 3. Be comfortable in terms of the knowledge‚ time‚ and resources needed to investigate the problem 4. Be able to collect and analyze numerical data 5. Must be a practical or theoretical reason for you to research the problem 6. It must be ethical for you to investigate the problem
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18. Based on a simple random sample of one hundred an analyst estimates the average hourly wage earned by workers in a city to be $30 and computes the margin of error to be $5. Can we conclude from this that most workers there earn between $25 and $35 per hour? Is the right interpretation for the margin of error? 23. Polls showed the two main candidates in the 2004 presidential election were nearly tied on the day before the election. To predict the winner a newspaper would like to have a poll
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Module 1 Suppose you hear an "old-timer" say‚ "Why‚ in my day‚ kids were much more respectful and didn’t cause as much trouble as they do nowadays!" Formulate a hypothesis related to this statement that you could test. How would you test it? The old-timer are the older person in their 70s or 80s at this time. I would compare the age when this old timer is raising his own children . what actually age he may be‚ let say‚ 25 years old if he was born in 1940 by the year 1965 to determine respectfulness
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Chapter 3 Fluid Statics: Definitions Statics: ∑F = 0. In statics we have only pressure as surface force and weight as body force. Thus‚ when fluids are still‚ the pressure is balanced by the fluid weight. No relative motion between adjacent fluid layers. Shear stress is zero Only _______ can be acting on fluid surfaces Gravity force acts on the fluid (____ force) Applications: Pressure variation within a reservoir Forces on submerged surfaces Buoyant forces 9/4/2013 1 Pressure Pressure is defined
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1. A density curve consists of a straight line segment that begins at the origin (0‚ 0) and has slope of 1. a. Sketch this density curve. What are the coordinates of the right endpoint of the segment? (Note that the right endpoint should be fixed so that the total area under the curve is 1. This is required for a valid density curve.) b. Determine the median‚ the first quartile (Q1)‚ and the third quartile (Q3). c. Relative to the median‚ where would you expect the mean of the distribution to lie
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College Writing 2 October 2012 Descriptive Essay A compact two-door car might not mean a lot to someone‚ but to me‚ working and improving my car is my favorite thing to do. When I am not inside my house or hanging out with my friends‚ you’ll be sure to find me working or cleaning my car. For most people‚ leaving their car stock is passable for their needs‚ but to me it’s not. My car is modified which makes it one of a kind. My car consists of its exterior‚ interior‚ and performance level
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Supervisors’ Relationships 3 Workplace Relationship Quality: 4 Peer Relationships 4 Study Description and Results 5 Interpersonal Conflict 6 Identifying Conflicts and Causes 6 Dealing with Interpersonal Conflict 7 Culture and Interpersonal Conflict 7 Intimate Workplace Relationships 8 Managing Workplace Relationships 9 Managing Conflict 9 Management by Deception: Deceptive Impression Management 10 References: 12 Introduction: When considering workplace relationships‚ consider
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Debate Stephanie J. Murray HCS/478 Monday‚ November 12‚ 2012 Dr. Lora Lee Debate Life sustaining treatments should be continued for patients in persistent vegetative states. All life is sacred and worthy of preservation‚ no matter what the condition is. There is currently no evidence that supports patients in persistent vegetative states do not feel pain or process sounds and discussions that are occurring around them. “. Descriptions of nonpurposeful behaviors as purposeful—smiling‚ laughing—can
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Open University of Malaysia WORKPLACE ENVIRONMENT AND ITS IMPACT ON EMPLOYEE PERFORMANCE A study submitted to Project Management Department in Saudi Aramco BY Nowier Mohammed Al-Anzi Open University of Malaysia 2009 i Open University of Malaysia WORKPLACE ENVIRONMENT AND ITS IMPACT ON EMPLOYEE PERFORMANCE A study submitted to Project Management Department in Saudi Aramco Nowier Mohammed Al-Anzi 51060418 Project Paper Submitted in Partial Fulfillment of the Requirement for the Degree of
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