Exam (elaborations)
Exam (elaborations) SMA - Statistics and Mathematics (CBTO1.SMA) Discovering Statistics Using IBM SPSS Statistics, ISBN: 9781526419521
- Course
- Institution
- Book
The document for exam questions
[Show more]
Connected book
Book Title:
Author(s):
- Edition:
- ISBN:
- Edition:
More summaries for
-
Exam Guide for Applied Multivariate Data Analysis – Get yourself a Wonderful Grade!
-
Summary of Statistics (IBC), Radboud University
-
Answers assignment 3 business research methods
Seller
Follow
Kirsten311
Content preview
Practice ExamQ2) Give a descriptive analysis of V105 (I would give part of my income if I were sure that money
was used to prevent environmental pollution).
A descriptive analysis on V105 indicates that the answers of the respondents on the statement ‘I
would give part of my income if I were sure that money was used to prevent environmental
pollution’ ranged from strongly agree to strongly disagree (see figure 1). Most respondents
answered that they do agree (45.1%). More than half of the respondents do strongly agree or agree
on this statement (65.0%). The mean (2.28), mode (2) and median (2.00) are not the same and
therefore we can conclude that V105 is not normally distributed.
Analyze -> Descriptive statistics frequencies
V105 Statistics: Mean, median, mode, minimum, maximum, range; charts: histogram
Figure 1: Bar chart V105
Q3) Run a regression analysis with V105 as dependent, and V235 (Sex), Age (V237), Country (V2A)
as independent variables. Use appropriate dummy coding for categorical variables.
We performed a regression analysis to see whether V105 (I would give part of my income if I were
sure that money was used to prevent environmental pollution) can be predicted from the variables
sex, age and country. To perform this analysis the variable country has been dummy coded with
Brazil being the reference category. 2.2% of the variance in V105 can be accounted for by the model
with all the predictors (R 2=0.022). The significant F-test (F4,3510=19.921, p<0.001) indicates that at
least one of the parameters is not equal to zero, meaning that at least one predictor has an
significant effect on V105. Inspection of t-statistics associated with the coefficient reveals that all
predictors (sex (b=-0.078, t=-2.712, p=0.007), age (b=0.003, t=2.948, p=0.003) and country (Italy: b=-
0.117, t=-3.273, p=0.001) Spain (b=0.172, t=5.058, p<0.001) are significant and thus have an effect
on V105. V105 thus varies per sex, age and country. The negative and significant coefficient of Italy,
indicates that on average the score for V105 is lower in Italy than in Brazil, meaning that on average
Italian people do agree more on the statement than Brazilian people. The positive and significant
coefficient of Spain, indicates that on average the score for V105 is higher in Spain than in Brazil,
meaning that on average Spanish people do less agree with the statement than Brazilian people.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Kirsten311. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $6.95. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
71498 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now