Reference no: EM1318552
Theoretical Background of one way analysis and application of One way ANOVA.
One-way analysis of variance: three means
College Students' Seating Choices and Motivation to Achieve
This activity is a revision of an activity found in Real Data: A Statistics Workbook Based on Empirical Data by Z. C Holcomb (1997). Published by Pyrczak Publishing.
Statistical Guide: To determine the significance of a set of differences among two or more means, we use analysis of variance (ANOVA). When ANOVA yields a probability of .05 or less, we usually reject the null hypothesis (the null hypothesis says that the difference among the means were created by sampling-random-error and are not reflective of a true difference in the population means). If the null hypothesis is retained, there is not sufficient reason to reject the hypothesis that the difference among the means is due to sampling error.
In this exercise you will be using ANOVA to compare three means. If the null hypothesis can be rejected based on these results, a further comparison between the groups can be calculated to determine which, if any, of the population means differ from one another. The formulas and explanations of the relevant F and t-tests can be found in chapters 15 and 16 of our text. Finally, a judgment of the effect size of independent variable will be calculated.
Background Notes: The seating positions chosen by college freshmen in three sections of a required course were observed and recorded as either rows 1-2, rows 3-4, or rows 5-6. Students were administered a self-report questionnaire on their achievement motivation (that is, their desire to achieve). The possible range of scores was 0 (very low motivation) to 30 (very high motivation).
Making Predictions: Before examining the data below, predict the results you will obtain. (When scientists make predictions, they are hypothesizing.) Note that your predictions are not right or wrong. Rather, they represent your best guess as to the outcomes you will obtain. After you perform the calculations, you will be able to determine whether the data support your predictions.
Specify confidence intervals for the three protected t-tests and list them here.
|
Completing the anova table
: Complete the ANOVA table. Carry out a test of hypothesis on each of regression coefficients. Could you delete any of the variables?
|
|
Accessing i/o device
: Consider a program which is accessing a single I/O device and compare the un-buffered I/O for the use of a buffer.
|
|
Do brief research on asean economic community
: Question: Do brief research on ASEAN Economic Community (AEC) and discuss on the following questions: How does the AEC affect the multinational firms investing in AEC members? What is the effect of AEC on the U.S. economy?
|
|
Significant portion of company revenue
: You are the Human Resources manager for large distribution site. Your recent employee opinion survey indicated that overall, employees felt that this was a good place to work. However, recent downturns in the economy have resulted in the loss of l..
|
|
Theoretical background of one way analysis
: This activity is a revision of an activity found in Real Data: A Statistics Workbook Based on Empirical Data by Z. C Holcomb (1997). Published by Pyrczak Publishing.
|
|
Probability of worker-distribution is normally distributed
: Suppose that distribution is normally distributed. If worker at this fast food restaurant is chosen at random,determine the probability that worker earns more than $6.75?
|
|
Importance of and measurement of patient satisfaction
: What are the importance of and measurement of patient satisfaction in the evaluation of U.S. health care? In your view, what are the most important steps that could be taken to improve patient satisfaction with health care services?
|
|
Advantages of having internal gills over external gills
: Explain the challenges and advantages of having internal gills over external gills for gas exchange? Explain how increased stress levels can affect hormones which ultimately inhibit the immune system? Include all relevant glands and hormones in you..
|
|
Compare and contrast outsourcing and offshoring
: Compare and contrast outsourcing and offshoring.Identify two companies that outsource certain tasks. What is this reason that each of these companies outsource?
|