Scatter plot and regression for Accu-Copier, Inc
Not what you're looking for?
1. Accu-Copiers, Inc. sells and services the Accu-500 copying machine. As part of its standard service contract, the company agrees to perform routine service on the copier. To obtain information about the time it takes to perform routine service, Accu-Copiers have collected data for 11 service calls. The data are shown below. Is number of copies serviced predictive of the number of minutes required to perform the service? (8 points)
a. Create a scatter plot for this data. What kind of relationship does this plot show?
b. Calculate a correlation for this data. Interpret this correlation.
c. Calculate the regression for this data - is this bivariate or multiple regression?
d. Write the regression equation for this data.
Service Call Number of Copiers Serviced Number of Minutes Required
1 4 109
2 2 58
3 5 138
4 7 189
5 1 37
6 3 82
7 4 103
8 5 134
9 2 68
10 4 112
11 6 154
2. The table below presents data concerning the nee for labor in 16 US Navy hospitals. Data collected include: Monthly labor hours required, monthly x-ray exposures, monthly occupied bed days, and average length of patients' stay (in days). The main objective of this regression is to help the Navy evaluate the performance of its hospitals in terms of how many labor hours are used relative to how many labor hours are needed. The Navy selected hospitals 1 through 16 from hospitals that it thought were efficiently run and wishes to use a regression model based on efficiently run hospitals to evaluate the efficiency of questionable hospitals. Create a regression equation that significantly predicts monthly labor hours required for these US Navy hospitals. (10 points)
a. Should use bivariate or multiple regression? Why?
b. Calculate the appropriate statistic. What are your predictors? What is your outcome variable?
c. Evaluate the results of the analysis - what predictor(s) were significant? Which were not? Interpret these findings.
d. Write the final equation.
e. What is the coefficient of determination for this analysis? Interpret this coefficient of determination.
Purchase this Solution
Solution Summary
A scatter plot and regression analysis is used to correlate data for Accu-Copier, Inc copying machine.
Solution Preview
1. Accu-Copiers, Inc. sells and services the Accu-500 copying machine. As part of its standard service contract, the company agrees to perform routine service on the copier. To obtain information about the time it takes to perform routine service, Accu-Copiers have collected data for 11 service calls. The data are shown below. Is number of copies serviced predictive of the number of minutes required to perform the service? (8 points)
a. Create a scatter plot for this data. What kind of relationship does this plot show?
b. Calculate a correlation for this data. Interpret this correlation.
c. Calculate the regression for this data - is this bivariate or multiple regression?
d. Write the regression equation for this data.
Service Call Number of Copiers Serviced Number of Minutes Required
1 4 109
2 2 58
3 5 138
4 7 189
5 1 37
6 3 82
7 4 103
8 5 134
9 2 68
10 4 112
11 6 154
(a) The scatter plot is ...
Purchase this Solution
Free BrainMass Quizzes
Know Your Statistical Concepts
Each question is a choice-summary multiple choice question that presents you with a statistical concept and then 4 numbered statements. You must decide which (if any) of the numbered statements is/are true as they relate to the statistical concept.
Terms and Definitions for Statistics
This quiz covers basic terms and definitions of statistics.
Measures of Central Tendency
This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.
Measures of Central Tendency
Tests knowledge of the three main measures of central tendency, including some simple calculation questions.