APPLICATION OF STATISTICAL CONCEPTS IN THE DETERMINATION OF WEIGHT VARIATION IN SAMPLES M.C. MENDOZA1 1NATIONAL INSTITUTE OF MOLECULAR BIOLOGY & BIOTECHNOLOGY‚ COLLEGE OF SCIENCE UNIVERSITY OF THE PHILIPPINES‚ DILIMAN‚ QUEZON CITY 1101‚ PHILIPPINES DATE SUBMITTED: 21 NOVEMBER 2013 DATE PERFORMED: 14 NOVEMBER 2013 ABSTRACT Accuracy and precision are critical concepts to the performance of a laboratory to produce sound analytical results (Singer‚ 2001). LOLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL
Premium Statistics Arithmetic mean Sample size
Sample sizes and confidence intervals for proportions Chong Chun Wie Ext: 2768 ChongChunWie@imu.edu.my Content • Sampling distribution of sample means (SDSM) • Normality Test • Estimating a population mean: σ known • Estimating a population mean: σ unknown • Standard deviation of proportion • Confidence interval of proportion • Hypothesis testing with proportion Population and Sample Samples Populations Sampling distribution of sample means (SDSM) Sampling distribution • Example – Select
Premium Normal distribution Sample size Confidence interval
One- and Two-Sample Tests of Hypothesis‚ Variance‚ and Chi-squared Analysis Problem Sets • Exercises 19 and 20 (Ch. 17) Chapter 10 31. A new weight-watching company‚ Weight Reducers International‚ advertises that those who join will lose‚ on the average‚ 10 pounds the first two weeks with a standard deviation of 2.8 pounds. A random sample of 50 people who joined the new weight reduction program revealed the mean loss to be 9 pounds. At the .05 level of significance‚ can we conclude that those
Premium Standard deviation Arithmetic mean Statistics
Chapter 10 31. A new weight-watching company‚ Weight Reducers International‚ advertises that those who join will lose‚ on the average‚ 10 pounds the first two weeks with a standard deviation of 2.8 pounds. A random sample of 50 people who joined the new weight reduction program revealed the mean loss to be 9 pounds. At the .05 level of significance‚ can we conclude that those joining Weight Reducers on average will lose less than 10 pounds? Determine the p-value. Answer: H0: = 10 pounds
Premium Standard deviation Statistics Arithmetic mean
EG4012 Engineering Project 4th Year BEng Honours Project Rotary Table and Sample Holder for RED By Thomas A. Lindie 51011245 Project Supervisor: Professor Marian Wiercigroch School of Engineering University of Aberdeen Kings College 2013-2014 Abstract The project is titled “Rotary Table and Sample Holder for Resonance Enhanced Drilling (RED)” and the following thesis will be used to address the work that has been carried out throughout the year in aid of achieving the goals that this
Premium Sample size
original collection of samples to the final step of communicating the test results to the patients‚ LAA has shown that they have created a process with numerous factors to success as well as room for improvement. The following is a flow chart representative of the steps of the process and the reliance each step has to other steps: While not all information was provided in the same metric for each step‚ the table below has converted each step to minutes per 1‚000 samples to allow the capability
Premium Capacity utilization Standard deviation Chemical engineering
Statistics True/False 1. A population is a set of existing units. Answer: True Difficulty: Easy 2. If we examine some of the population measurements‚ we are conducting a census of the population. Answer: False Difficulty: Medium 3. A random sample is selected so that on each selection from the population every unit remaining in the population has an equal chance of being chosen. Answer: True Difficulty: Easy 4. A process is in statistical control if it does not exhibit any unusual variations
Premium Sampling Sample
THEME | AUTHOR 1 | AUTHOR 2 | AUTHOR 3 | AUTHOR 4 | AUTHOR 5 | AUTHOR 6 | Definition of Sampling | Tejero‚E.G.(2006)p.43Sampling affords all the members of the population an equal chance of being selected and becoming a part of the samples of the intended research. | David‚F.P (2005) p.95It is the representative portion of a population or some elements in a population that will represent the entire population. | Gill and Johnson(2002)p.101All surveys are concerned with identifying the ‘research
Premium Sampling Sample Stratified sampling
populations based on the examinations of smaller sets of data. a. Descriptive statistics: It consists of the collection‚ organization‚ summarization and presentation of data. Examples: sample mean‚ median‚ range‚ standard deviation‚ charts‚ graphs‚ tables‚ etc. b. Inferential statistics: It consists of generalizing from samples to population‚ performing estimations and hypothesis tests‚ determining relationships among variables‚ and making predictions. Examples: Analysis of variance‚ test of goodness of
Premium Sampling Sample Stratified sampling
4. What is Research Design? What are the different types of Research Designs? Research Design The research designer understandably cannot hold all his decisions in his head. Even if he could‚ he would have difficulty in understanding how these are inter-related. Therefore‚ he records his decisions on paper or record disc by using relevant symbols or concepts. Such a symbolic construction may be called the research design or model. A research design is a logical and systematic plan prepared
Premium Sampling Stratified sampling Sample