EED 280 – Standards‚ Observation‚ Assessment: 0 - 8 (37317) Chap 3: How Standardized Tests are Used‚ Designed‚ and Selected 1. What is a standardized test? Describe different types of standardized tests. they are psychological test that measure abilities achievements aptitude interest attitude values and personality characteristic . personality test: measures a person’s tendency to behave
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Answer: allow for scores from different tests to be compared directly create a common distribution where the mean is 0 create a common distribution where the standard deviation is 1.0 make the data involved in the transformation normal Instructor Explanation: Found in section 3.2‚ The Standard Normal Distribution. Points Received: 0 of 1 Comments: Question 3. Question : In a distribution for which the mean is 25 and the standard deviation is 5‚ what percentage of all scores
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often? A. Mean B. MedianC. ModeD. Geometric mean 4) Which level of measurement is required for the median? A. Nominal B. OrdinalC. IntervalD. Ratio 5) The mean and the variance are equal in…A. the normal distributionB. the binomial distributionC. the Poisson distributionD. the hypergeometric distribution 6) The difference between the sample mean and the population mean is called the…A. margin of errorB. population standard deviationC. standard error of the meanD. sampling error 7) A dummy variable
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TOMAS CLAUDIO MEMORIAL COLLEGE Higher Education Pioneer in Eastern Rizal Taghangin‚ Morong‚ Rizal‚ Phillippines * Tel. No: 691-5532/691-5834 Telefax: 691-5595 COLLEGE OF EDUCATION TITLE: GRADING SYSTEM NORM-REFERENCED GRADING PRESENTER:
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ETX1100/ETF5900 Tutorial 5 The normal distribution SOLUTIONS Part A A5.1. Instructions for the use of the normal distribution functions NORM.S.DIST‚ NORM.S.INV‚ NORM.DIST‚ and NORM.INV are provided in section E4.4 of the Excel notes in the Software Information Folder under Week 0 on Moodle. (a) Use the Excel function NORM.S.DIST to calculate the following probabilities to four decimal places‚ where the random variable Z follows a standard normal distribution. Write your answers to four decimal
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weeks per year • Weekly demand average = 102 gaskets/week • Annual demand (D) = 102*52 = 5‚304 gaskets • Holding cost = $1.85 per gasket per year (= 0.21*(1-0.32)*$12.99) • Ordering cost = $20 per order Analysis EG151 (continued) • Normal distribution a 95% cycle-service level corresponds to a z = 1.645 • Standard deviation in weekly demand = ? • Standard deviation in
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* Question 1 2 out of 2 points | | | In general‚ an increase in price increases the break even point if all costs are held constant. Answer | | | | | Selected Answer: | False | Correct Answer: | False | | | | | * Question 2 0 out of 2 points | | | Fixed cost is the difference between total cost and total variable cost. Answer | | | | | Selected Answer: | False | Correct Answer: | True | | | | | * Question 3 0 out of 2 points | |
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Unit 3 The z-test Overview Whenever the normal probability curve is set up as the statistical distribution for testing hypothesis about a population‚ the z-tests are used. There are 4 types of z test that will be taken up. Lesson 1: z-test of Hypothesis about a Population Mean Before the z-one population test of hypothesis about a population mean is applied‚ certain assumptions must be met: (1) The (population standard deviation) is known. (2) The data are either interval
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Investigating Bottling Company Case Study T.P University Statistics Mat 300 Mr. Thevar December 01‚ 2013 Investigating Bottling Company Case Study The case study that is being investigated is for a bottling company producing less soda than what is advertised. Customers have complained that the sodas in the bottles contain less than the advertised sixteen ounces. The employees at the company have measured the amount of soda contained in each bottle. There are thirty bottles that have
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A skewed distribution measures lack of similarity in a bell-shaped graph known as a bell curve. It occurs when data is plotted on the graph based on normal measured traits. A normal distribution is symmetrical on both sides of the mean while a negative distribution has fewer scores on the left side of the mean than the right side. It is the opposite for a positive skew. The value for the mean‚ median and mode is the same for a normal distribution. 34% of the population
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