do we use a ‘sample’ When do we use a census (population) Sampling errors ◦ Difference between a measure from sample and the measure which can be obtained from the population Non-sampling errors ◦ Selection Error ◦ Population specification Error A bias/error which creeps in when sample obtained through nonprobabilistic techniques does not represent the population When an inappropriate population is chosen from which a sample is selected E.g. could be choosing a sample of cat owners
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chamber at thelower edge is capable of sliding freely between vertical guides‚ and fall concentric over the cup. There is anarrangement for raising the hammer and allowing it to fall freely between vertical guides from a height of 38cm on the test sample in the cup‚
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measure consumer characteristics and opinions. The survey sample is defined as the survey demographic was any “customers” of Wal-Mart that shopped within stores. The type of survey administered chosen was a non-probability sampling survey‚ which is convenient for the customer to fill out on his or her terms. The collection process was identical to the distribution; through hand-to-hand transactions‚ mail-in‚ or while shopping online. The sample was a group of shoppers that totaled 10 stores in different
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CHAPTER 2 DATA COLLECTION AND PRESENTATION 2.1 Data Collection This section aims to: 1. Identify‚ compare and contrast the different types of data; 2. List and explain the various techniques of selecting a sample; and 3. Enumerate and illustrate the different sampling techniques Types of Data Data is a collection of facts‚ such as values or measurements. It can be numbers‚ words‚ measurements‚ observations or even just descriptions of things. Two types
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1.0.0 INTRODUCTION 1.1.0 NEED OF THE STUDY Advertising industry is grooming with investments of millions in the industry. The improvisation in advertisement production standards has attracted the audience in the past. Advertising can have wide-ranging repercussions on a society. Some critics suggest that advertising promotes a materialistic way of life by leading people to believe that purchasing products or services achieve happiness. Today mass number of people with various age
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mass of filter ring and extracted sample. EQUIPMENT Centrifuge Extractor and filter rings. Balance Oven Solvent- Methylene Chloride SIEVE ANALYSIS After getting the binder content‚ Extracted aggregates are put in the sieves and sieve shaker is turn on. The extracted aggregates are separated to individual sizes. Then the individual size aggregates is weigh to get the mass. EQUIPMENT No. of Sieve Sieve shaker Balance PREPARING MARSHALL SAMPLES To achieved 135 c temperature test
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specimens under different magnifications using different objective lenses‚ for each specimen we started using the scanning objective then the low-power objective ending with the high-power objective in order to get higher magnification. We viewed the samples and made drawings of them Method: We carefully carried the microscope from the cabinet to the desk by placing one hand around the arm and the other firmly under the base. Then using the coarse adjustment knob
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SUBMITTED BY: SECTION E (GROUP 1) Factors affecting students’ academic performance Introduction Today’s generation teenager who is in the pivotal level of school life – class XII‚ has to go through multiple dilemmas‚ and has many concerns which probably a teenager‚ couple of generations ago did not have. CBSE and its new grading system‚ schools with their modern IT (or other innovative) teaching pedagogy‚ peer and parental influence – are few things which are probably constantly influencing
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A STUDY ON THE INFLUENCE OF EXTERNAL FACTORS IN PURCHASING DECISION OF PROPERTY” PROJECT REPORT SUBMITTED TO THE UNIVERSITY OF MADRAS IN PARTIAL FULLFILLMENT OF THE MASTERS DEGREE IN BUSINESS ADMINISTRATION SUBMITTED BY JAYASHREE.M (Register no. MA81042) UNDER THE GUIDANCE OF Mrs.Pallavi ‚ MPM(PhD) [pic] MEENKASHI SUNDARARAJAN SCHOOL OF MANAGEMENT [Formerly known as Indian Institute of Engineering Technology] KODAMBAKKAM CHENNAI-24 JULY 2009 ACKNOWLEDGEMENT
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life insurance company. The study is a survey of customer satisfaction based on a sample of 600. You are asked to comment on its quality. What do you look for? The first thing that I would look for is how the sample is drawn by the consultant. 600 is a bulky sample‚ there could be many ways in which unfairness keeps into an unacceptably drawn sample. If the sample is an ease sample or other non-probability sample‚ this may perhaps call into question many of the statistical methods that were
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