Reference no: EM131274187
FOCUSING ON DATA ANALYSIS
The file named Focus.txt in the Focus Database section of the WeissStats site contains information on the undergraduate students at the University of Wisconsin - Eau Claire (UWEC). Those students constitute the population of interest in the Focusing on Data Analysis sections that appear at the end of each chapter of the book).
Thirteen variables are considered. Table 1.9 lists the variables and the names used for those variables in the data files. We call the database of information for those variables the Focus database.
Also provided in the Focus Database section is a file called FocusSample.txt that contains data on the same 13 variables for a simple random sample of 200 of the undergraduate students at UWEC. Those 200 students constitute a sample that can be used for making statistical inferences in the Focusing on Data Analysis sections. We call this sample data the Focus sample.
Large data sets are almost always analyzed by computer, and that is how you should handle both the Focus database and the Focus sample. We have supplied the Focus database and Focus sample in several file formats in the Focus Database section of the WeissStats site.
If you use a statistical software package for which we have not supplied a Focus database file, you should. (I) input the file Focus.txt into that software, (2) ensure that the variables are named as indicated in Table 1.9, and (3) save the worksheet to a file named Focus in the format suitable to your software, the with the appropriate file extension. Then, any time that you to analyze the Focus database, you can simply retrieve your Focus worksheet. These same remarks apply to the Focus sample, well as to the Focus database.
TABLE
| Variables and variable names for the Focus database |
|
| Variable |
Variable name |
| Sex |
SEX |
| High school percentile |
HSP |
| Cumulative GPA |
GPA |
| Age |
AGE |
| Total earned credits |
CREDITS |
| Classification |
CLASS |
| School/college |
COLLEGE |
| Primary major |
MAJOR |
| Residency |
RESIDENCY |
| Admission type |
TYPE |
| ACT English score |
ENGLISH |
| ACT math score |
MATH |
| ACT composite score |
COMP |
The Focus database and Focus sample contain information on the undergraduate stu¬dents at the University of Wisconsin - Eau Claim (UWEC). Now would be a good time for you to review the discussion about these data sets.
Open the Focus sample worksheet (FocusSample) in the technology of your choice and do the following.
a. Find the linear correlation coefficient between cumulative GPA and high school percentile for the 200 UWEC undergraduate students in the Focus sample.
b. Repeat part (a) for cumulative GPA and each of ACT English score, ACT math score, and ACT composite score.
c. Among the variables high school percentile, ACT English score, ACT math score, and ACT composite score, identify the one that appears to be the best predictor of cumulative GPA.
Explain your reasoning.
Now perform a regression analysis on cumulative GPA, using the predictor variable identified in part (c), as follows.
d. Obtain and interpret a scatterplot.
e. Find and interpret the regression equation. 1. Find and interpret the coefficient of determination.
g. Determine and interpret the three sums of squares SSR, SSE, and SST.
|
How you would implement such a plan logistically
: Describe the characteristics of the culture you are planning a prevention program for. What is their background? Historically do they have a positive or a negative relationship with health care/prevention? Why is it important to implement a preve..
|
|
Healthcare facilities in the gainesville florida area
: Your organization has been given the assignment of interconnecting 10 healthcare facilities in the Gainesville Florida area. These facilities are owned by individual practices which report to a master practice for Gainesville.
|
|
Do any coders need to be placed on probation
: Do any coders need to be placed on probation? Do any coders need to be considered for termination? Are any coders in their probationary period in jeopardy of not meeting the probationary expectations?
|
|
Give legal advice using statutory interpretation principle
: Provide legal advice, using statutory interpretation principles and approaches, to Brigitta, the Commission and Evo Pty Ltd in relation to the operation of the legislation in their circumstances.
|
|
Find the linear correlation coefficient
: Find the linear correlation coefficient between cumulative GPA and high school percentile for the 200 UWEC undergraduate students in the Focus sample and Find and interpret the regression equation. 1. Find and interpret the coefficient of determina..
|
|
Design and implementation of a global information system
: Next, identify one obstacle to the design and implementation of a global information system, and explain one way in which an organization can overcome the obstacle in question.
|
|
Values of the data before and after the update
: When an update to the database takes place, the time of the update, the values of the data before and after the update, and the type of lock used are recorded in the transaction log. true or false?
|
|
Explain potential issues associated with ip ownership
: Assess the potential issues associated with IP ownership in organizations today. Suggest the factors organizations should consider when determining the ownership of IP and including IP ownership clauses into contracts.
|
|
Describe steps counselor should take if referral not option
: Identify actions a counselor might take when confronted with clients they find difficult to treat due to differences in values/beliefs regarding one or more of the following issues: abortion, suicide, adultery, drug use, domestic violence, child a..
|