A comprehensive, old-school summary of the prescribed work contained in the 'Only Study Guide for PYC3704', including a Glossary of term, lists for symbols and formulas, as well as helpful video links, and added infographics to enhance the learning experience.
Answer: P(x) = [n! / x! (n-x)!][Px(1-p)n-x]
*x = the probability of the number of successes to be determined for a random variable
*n = the number of trials
*p = the probability associated with any single, independent outcome of the variable
**Note: n-x is a superscript
7.
Formula:
Z-Test
Answer: z = (x - µ) / σ
*x = variable
*μ = population mean
*σ = standard deviation [SD]
8.
Formula:
Sample Error
Answer: σx̅ = σ / √n
*σx̅ = standard error
*σ = population standard deviation
*√n = Sample size
Content preview
2022
Semester 01
L.Smith
(67337163)
,Contents
1. TOPIC 1 – Quantitive Methods in Research Psychology ................................................................................ 3
1.1 Quantitive Research in Psychology ................................................................................................................. 4
1.2 Constructs as the Building Blocks of Theories ............................................................................................... 4
1.3 How Constructs are made visible through Measurement ............................................................................. 4
1.4 Collecting Info by Sampling Data ..................................................................................................................... 5
1.5 The Research Hypothesis [RH] ........................................................................................................................ 7
SUMMARY OF TOPIC 1.......................................................................................................................................... 8
2. TOPIC 2 – Probability ........................................................................................................................................... 9
2.1 Intro to the Study of Probability ....................................................................................................................10
2.2 Discrete Probability Distribution & The Binominal Distribution ...............................................................13
2.3 Continuous Probabilities & The Normal Curve ............................................................................................17
2.4 Sampling Distributions & The Central Limit Theorem ................................................................................21
SUMMARY OF TOPIC 2........................................................................................................................................24
3. TOPIC 3 – General Principles of Statistical Hypothesis Testing ................................................................26
3.1 Translating a Research Hypothesis into a Statistical Hypothesis ...............................................................27
3.2 Using Data from a Sample to Calculate the Probability of a particular Result ...........................................28
3.3 Making a Decision regarding the Null & Alternative Hypothesis ................................................................30
4. TOPIC 4 – Statistical Hypothesis Testing: Testing Means for a Single Sample .......................................34
4.1 Comparing a single mean to a constant value ..............................................................................................35
4.2 Testing a single mean when the population standard deviation is unknown ...........................................36
5. TOPIC 5 – Statistical Hypothesis Testing: Comparing Two Samples ........................................................38
5.1 Testing for differences between the means of two independent groups ...................................................39
5.2 Testing for differences between the means of two dependent groups ......................................................41
5.3 Using differences scores to compare two independent groups ..................................................................42
6. TOPIC 6 – Testing Hypotheses about a Relationship Between Two Variables .......................................45
6.1 Correlation: Measuring the association between variables ........................................................................46
6.2 A test of association between two nominal variables: the χ2 test contingency tables ..............................51
GLOSSARY & ABBREVIATIONS .............................................................................................................................55
LIST OF SYMBOLS ....................................................................................................................................................58
LIST OF FORMULAS.................................................................................................................................................59
LIST OF HELPFUL VIDEO LINKS ............................................................................................................................62
SUMMARY PYC3704 – Psychological Research [L.Smith 67337163] Page 1
, Notes:
Defined terms are highlighted in yellow and definitions are indicated with a *
Info obtained from the internet are in italics, incl. the {internet source}
Abbreviations are indicated in square brackets [Abbr.]
To insert the mean symbol (µ) in Word use Alt+m
To insert the x̅ symbol in Word type an x then use Alt+0773
To insert the square root symbol (√) in Word use Alt+251
SUMMARY PYC3704 – Psychological Research [L.Smith 67337163] Page 3
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 EFT, 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 this summary from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller lizelsmith. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy this summary for R85,00. You're not tied to anything after your purchase.
