Chapter One Analysis Based on the Excel Problem of chapter one‚ if the total capacity for this business is 725 will you stay in it? If you want to stay in it what price you need to obtain a break even point of 725? On Problem #4 the Break-Even Analysis was as follows: Price per Unit $1.50 V. Cost per Unit $0.50 Total Fixed Cost $750.00 Break Even in Units= Fixed Cost Unit Contribution margin= Unit Contribution Margin (Price per Unit – V. Cost per Unit) = 750/ (1.50 - .50)
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or explain how you arrived at your answer. 1) Compute the mean‚ median‚ and mode for the following distribution: (5 pts) 1‚2‚2‚3‚3‚3‚3‚3‚3‚4‚4‚5‚6‚7‚7‚8‚8‚8‚8‚8‚8‚9‚9‚10 The mean is what people call the average. (1+2+2+3+3+3+3+3+3+4+4+5+6+7+7+8+8+8+8+8+8+9+9+10 = 127/24 = 5.2916 Mean = 5.29 The median is the middle value. When the middle does not fall neatly in the distribution‚ use the following formula to identify the position. In the formula n is the sample size. Median position
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nature). Third‚ any independent variable consists of one group or two “matched pair” groups. Finally‚ all subjects are assumed to have been surveyed the same and data collection was unbiased. The assumption that was met in this study is the normal distribution. 5. Compare the 3 months and 6 months t ratios for the variable Exercise from Table 3. What is your conclusion about the long-term effect of the health-promotion intervention on Exercise in this study? After comparing the t-ratios for the
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Applied Linear Regression Notes set 1 Jamie DeCoster Department of Psychology University of Alabama 348 Gordon Palmer Hall Box 870348 Tuscaloosa‚ AL 35487-0348 Phone: (205) 348-4431 Fax: (205) 348-8648 September 26‚ 2006 Textbook references refer to Cohen‚ Cohen‚ West‚ & Aiken’s (2003) Applied Multiple Regression/Correlation Analysis for the Behavioral Sciences. I would like to thank Angie Maitner and Anne-Marie Leistico for comments made on earlier versions of these notes. If you
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imperative that the sample is representative of the group to which it is being generalized. Starting point of analysis is determining the level of measurement of unit of analysis. Measures of central tendency Aim: to (univariately) describe the distribution of variables on different levels of measurement MEAN Mean: a first a first measure of central tendency for the sample: for the population: Characteristics of the mean: * Changing a score will change mean * Adding or removing
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located within the 10-18 year range and since both 14 and 18 had the most single occurrences of 5 apiece both of these are used as the mode. The standard deviation for this data is 5.086. The data for credit balance shows that it has a normal distribution with no skew. The Mean (3970)‚ Median (4090)‚ and Mode (3890) are all within very close proximity and the Mean is at the peak of the chart. All other data points fall nearly equal on either side of the Mean. The standard deviation is fairly
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Case Problem: Specialty Toys Specialty Toys‚ Inc.‚ sells a variety of new and innovative children’s toys. Management learned that the preholiday season is the best time to introduce a new toy‚ because many families use this time to look for new ideas for December holiday gifts. When Specialty discovers a new toy with good market potential‚ it chooses an October market entry date. In order to get toys in its stores by October‚ Specialty places one-time orders with its manufacturers in June or July
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regression (pgs. 132 – 134) Understand the cautions about correlation and regression (pgs. 142 – 146) Important terms to understand: Preface and Chapter 1 Definition of statistics Individuals Categorical vs. quantitative variables Distribution The appropriate use of pie charts‚ bar charts‚ histograms‚
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1. STAT10T 7.2.1-2 (Points: 5.0) Solve the problem. Find the critical value zα/2 that corresponds to a degree of confidence of 91%. a. 1.645 b. 1.75 c. 1.34 d. 1.70 2. STAT10T 7.2.3-2 (Points: 5.0) Solve the problem. The following confidence interval is obtained for a population proportion‚ p: 0.817 < p < 0.855 Use these confidence interval limits to find the point estimate‚ . a. 0.833 b. 0.817 c. 0.839 d. 0.836 3. STAT10T 7.2.4-3 (Points: 5
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bell shaped curve where most people score around the average in any given population. This is in respect to the normal distribution which tells us where a percentage or a population falls within the spread of scores‚ called the standard deviation. In psychology‚ behavior and personality traits can be measured in terms of population distribution – they assume that individuals are normal if they do not deviate far from the average (IQ) and very high or low score would be considered abnormal. However
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