Quantitative Data Analysis 1 (QDA1) Lecture Notes - GRADE 9,0
174 views 4 purchases
Course
Quantitative Data Analysis 1 (6011P0218Y)
Institution
Universiteit Van Amsterdam (UvA)
Book
Discovering Statistics Using IBM SPSS
Quantitative Data Analysis 1 lecture notes from 13 lectures, including SPSS tips. The summary is 31 pages and includes notes from all lectures given in the course 6011P0218Y at UvA.
Exam Guide for Applied Multivariate Data Analysis – Get yourself a Wonderful Grade!
Summary of Statistics (IBC), Radboud University
Answers assignment 3 business research methods
All for this textbook (117)
Written for
Universiteit van Amsterdam (UvA)
Business Administration
Quantitative Data Analysis 1 (6011P0218Y)
All documents for this subject (3)
Seller
Follow
zarafranceschi
Reviews received
Content preview
Quantitative Data Analysis 1
Lecture 1 03/02/20
Why statistics / quantitative data analysis?
Research for science and decision making
Data and software are accessible (e.g. SPSS)
Population and sample
Population
o The complete group of interest
o All values within the whole group of interest
Sample
o A subset of the population for which observations are gathered
o The observed values
Random sampling
o Each member of the population has equal chance to enter the sample
Definition of variable types
The statistical analysis you can do depends on the type of variable
Quantitative (“scale variable”): measure a number (by nature)
o Continuous: interval of possible values
(idealised view because in practice you always have to round the number)
E.g. temperature in degrees Celsius, income in Euros
Differences have meaning; hence also called “interval variable”
o Discrete: series of isolated possible values
E.g. number of cars sold (0, 1, 2, 3, …), change in number of employees (…, -2, -1, 0,
1, 2 …)
o No clear division line between discrete and continuous
Qualitative: measure a category
o Ordinal: ordered categories
E.g. small/medium/large drink, job skill (very low, low, medium, high, very high)
o Nominal: unordered categories
E.g. employed/unemployed, brand of a product
Hierarchy in level of information
o Continuous – Discrete – Ordinal – Nominal
Likert variable: used to measure judged
o E.g. agreement: 1=strongly disagree, 2=disagree, 3=neutral, 4=agree, 5=strongly agree
o A Likert variable is ordinal, not quantitative
o Still, in research it is often treated as quantitative. (Why?)
This presupposes equal distances between successive categories
This is justified if the categories are consistent with equal distances and a
quantitative scale with numbers is shown in the questionnaire.
Exploring your data
For qualitative data (categorical) we use:
o Frequency table
o Bar chart
To see and compare the frequencies and to see the order of categories if ordinal
o Pie chart
To see the shares
o Mode (most frequent outcome)
o Median, only for ordinal data (middle outcome)
For quantitative data we use:
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 zarafranceschi. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $11.24. You're not tied to anything after your purchase.
