mumford@purdue.edu Econ 360 - Fall 2012 Problem Set 1 Answers True/False (30 points) 1. FALSE If (ai ‚ bi ) : i = 1‚ 2‚ . . . ‚ n and (xi ‚ yi ) : i = 1‚ 2‚ · · · ‚ n are sets of n pairs of numbers‚ then: n n n (ai xi + bi yi ) = i=1 i=1 ai x i + i=1 bi yi 2. FALSE If xi : i = 1‚ 2‚ . . . ‚ n is a set of n numbers‚ then: n n n n n (xi − x) = ¯ i=1 n i=1 2 x2 i − 2¯ x i=1 xi + i=1 x = ¯ i=1 2 x2 − n¯2 x i where x = ¯ 1 n i=1 xi 3. TRUE If xi : i = 1‚ 2‚ . . . ‚ n is a set of n numbers and a
Premium Standard deviation Variance Random variable
System Base Symbols b l Used by humans? Used in computers? Decimal 10 0‚ 1‚ … 9 Yes No Binary 2 0‚ 1 No Yes Octal 8 0‚ 1‚ … 7 No No Hexadecimal 16 0‚ 1‚ … 9‚ ‚ ‚ ‚ A‚ B‚ … F No No 1 6/28/2012 Quantities/Counting (1 of 3) Decimal 0 1 2 3 4 5 6 7 Binary 0 1 10 11 100 101 110 111 HexaOctal decimal 0 0 1 1 2 2 3 3 4 4 5 5 6 6 7 7 p. 33 Quantities/Counting (2 of 3) Decimal 8 9
Premium Roman numerals Binary numeral system Hexadecimal
Pipe Flow Experiment Purpose The purpose of the experiment is providing an opportunity to students of experience to familiarize with some key aspects of fluid flow in pipe‚ notably friction losses and verify theory. In this experiment‚ required equipment are a water tank‚ piezometric tubes‚ pump‚ a stop watch‚ empty bucket and a digital weight scale. By operating the pump to keep the water is full in the water
Premium Fluid dynamics Plumbing Liquid
MGMT 7 Management Team Decision Chapter 5 To Pay or Not to Pay Toyota used to sit on top of the world. It basked in the reputation of building high-quality cars efficiently. It enjoyed unprecedented growth‚ even surpassing General Motors as the largest car manufacturer in the world. But all of that came tumbling down with reports that cars were accelerating out of control‚ careening down highways‚ and putting everyone’s lives in danger. There was even a recording of a 911 call from an off-duty
Premium Automotive industry Toyota General Motors
that is done for set reasons”. An obligation is something we have promised ourselves‚ and sometimes others‚ that we would do‚ and they cannot be forgotten. As Key Club representatives‚ we have a duty to keep our club running smooth throughout the year and finish out the year strong. It is important to fulfill end-of-the-year obligations for Key Club because others are dependent on us. We are a team and we all depend on each other in order to have a successful club. Officer elections being held mean
Premium Obligation Duty
Test Bank for Organization Development & Change Chapter 1 General Introduction to Organization Development Multiple Choice Questions 1. Which of the following is included in the definition of OD? a. OD applies to an entire system b. OD is based on behavioral science knowledge c. OD is concerned with planned change d. OD encompasses strategy‚ structure‚ and process changes e. all of the above ANS: e 2. Organization development distinguishes itself from organization change and change
Premium Change management Organization Management
Key Factors Yvonne Perry Everest Online Key Factors Briefly describe the five key factors in selecting a good location for a "brick-and-mortar" retail store. Which of these factors do you believe is most important? Why? The location of a brick-and-mortar business is the key to the success of the business. There are five key factors in selecting a location they are customer accessibility‚ business environment conditions‚ site availability and cost‚ entrepreneur’s personal preference‚ and resource
Premium Business Entrepreneurship Commerce
Artist created music for pleasure‚ but is now a monetized industry‚ made up of risks and investment. 1.1 Key stakeholders and structure of music The music industry is formed by many different stakeholders ‚ all useful and necessary to run this. The music must surely be first of all created and then later become known. To succeed in this there are some key roles in the music industry Most important and essential roles are : ARTIST AND COMPOSERS : can be classified
Premium Management Health care Education
received their grades on the first test. The instructor has provided information about the first test grades in some previous classes as well as the final average for the same students. Some of these grades have been sampled and are as follows: Student 1 2 3 4 5 6 7 8 9 1st test grade 98 77 88 80 96 61 66 95 69 Final Average 93 78 84 73 84 64 64 95 76 (a) Develop a regression model that could be used to predict the final average in the course based on the first test grade. (b) Predict the final average
Premium Regression analysis Linear regression
Psychology Experiment No. 2 Effect of Inconsistency of Objects in Scenario on Perception Introduction: In our everyday lives‚ we are used to seeing objects within their particular characteristic scenarios. For example‚ it is nothing to wonder if we see a person browsing the internet in a computer lab or a car speeding on a road. However‚ when we see an object which is inconsistent with the environmental setting‚ we do feel alarmed. Thus‚ it is shocking for us to see someone working on a
Premium Null hypothesis Hypothesis