## Solution Library

#### Regression Analysis of Digital Cell Phone Inc

Question Digital Cell Phone, Inc. Paul Jordan has just been hired as a management analyst at Digital Cell Phone, Inc. Digital Cell manufactures a broad line of phones for the consumer market. Paul’s boss, John Smithers, chief operations officer, has asked Paul to stop by his office this morn ... Read More

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#### Research on Gender Confusion among Urban Adolescents

Question Write a research paper on the topic "Gender confusion is more prevalent among urban adolescents." Summary This question belongs to statistics and discusses gender confusion among urban adolescents. Word count: 2480   ... Read More

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#### Running Appropriate Descriptive Statistics on Given Variables

Question Run the APPROPRIATE descriptive statistics on the variables Earn5yr, Test2005, Grad2005, SkillVal, STEM2010, FacSal05, FamIncL and FirstGen, and report them in a table. Summary This question belongs to statistics and discusses about appropriate descriptive statistics on variables. Word ... Read More

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#### Comparison of ACT and SAT Math Scores of First Generation Students

Question Compare the average ACT/SAT math scores (for students entering in 2005-2006) across the three groups of schools categorized by the proportion of first-generation students. Which differences are significant at the 5% level? Does taking in more first-generation students lower the average tes ... Read More

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#### Relation Between Family Income and Proportion of First-Generation Students

Question Is there a statistically significant relation between the average family income of students and the proportion of first-generation students (i.e. those whose parents did not go to college) attending a school? Describe the relation in your own words, and suggest an explanation. Summary Th ... Read More

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#### Model to Predict Median Earnings in 2011 to 2012

Question Build a model to predict the median earnings in 2011-2012 for the 2005-2006 cohort (in 2014 USD). How well does your model fit the data? List the factors that have a significant effect on earnings. Explain, in one or two sentences for each factor, how each significant factor might have an ... Read More

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#### Comparison of Actual Median Earnings with Model-Predicted Earnings

Question Compare the actual median earnings in 2011-2012 with the model-predicted earnings. Create a new variable called ValueAdd (actual - predicted earnings) and report its descriptive statistics, including a histogram. Sort the schools in DESCENDING order of ValueAdd. Thus identify the top 5 val ... Read More

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#### Sales Forecast Using Regression Function

Question Year   1988 1989   1990 1991 1992 1993 1994 1995 1996 Sales   328 463   543 481 514 687 839 861 1145       ... Read More

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#### Sales Forecast Using Simple Moving Average

Question Year   1988 1989   1990 1991 1992 1993 1994 1995 1996 Sales   328 463   543 481 514 687 839 861 1145       ... Read More

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#### Using Mean Absolute Percent Error MAPE for Accurate Sales Forecasting

Question Year   1988 1989   1990 1991 1992 1993 1994 1995 1996 Sales   328 463   543 481 514 687 839 861 1145       ... Read More

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#### Simple Linear Regression for Forecasting Sales

Question Year   1988 1989   1990 1991 1992 1993 1994 1995 1996 Sales   328 463   543 481 514 687 839 861 1145       ... Read More