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Statistics: summaries and study assistance - Theme
Statistiek: samenvattingen en studiehulp - Thema
Statistiek: samenvattingen en studiehulp - Thema
Aantekeningen, artikelen, oefenmateriaal, samenvattingen en studiehulp voor statistiek Statistiek bij o.a bedrijfskunde, psychologie, pedagogiek en sociale wetenschappen
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What is a one sample t-test?
A one-sample t-test is a statistical hypothesis test used to determine whether the mean of a sample is statistically different from a hypothesized value. It's a common test used in various fields when you only have data from a single group.
What do you use a one sample t-test for?
Here are some common applications of a one-sample t-test:
.......read moreWhat is the difference between sampling error and sampling bias?
Both sampling error and sampling bias are important concepts in statistics, but they represent distinct phenomena that can affect the accuracy and generalizability of research findings. Here's a breakdown to clarify the key differences:
| Feature | Sampling Error | Sampling Bias |
|---|---|---|
| Definition | The inevitable difference between a population parameter and its estimate |
What is sampling bias?
In the realm of statistics, sampling bias refers to a systematic distortion that occurs when a sample does not fairly represent the entire population it is drawn from. This distortion can lead to misleading conclusions about the population if left unaddressed.
Here's a breakdown of the key points about sampling bias:
- Misrepresentation: Unlike sampling
Study Guide with flashcards and definitions with Statistics of Biology at Utrecht University
Flashcards and definitions with Statistics of Biology
Online flashcards with Statistics of Biology
- Histogram
- P-value
- Boxplot
- One sample t-test
- Paired t-test
- Two sample t-test
- Pie chart
- Ordinary differential equation (ODE)
- Hill function
- Density dependent birth rate
- Density dependent death rate
- Cellular automata
- Individual based models
- Partial differential equations
- Event based models
- Lotka-Volterra model
- Competitive exclusion
- Hopf-bifurcation
- For flashcards and definitions, see the supporting content of this study guide
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What is a boxplot?
A boxplot, also known as a box and whisker plot, is a graphical representation of the five-number summary of a dataset. It helps visualize the distribution, spread, and potential outliers of the data in a concise way.
Here are the key elements of a boxplot:
- Box: Represents the interquartile range (IQR), which encompasses the middle 50% of the data. The
What is a p-value?
A p-value, short for probability value, is a statistical measurement used in hypothesis testing. It tells you the probability of observing the results you obtained in your study, assuming the null hypothesis is true.
The null hypothesis, typically denoted by H₀, represents the default assumption that there is no effect or difference between the groups being compared.
Here's a
.......read moreWhat is a histogram?
A histogram is a graphical representation of the frequency distribution of data. It is a type of bar chart, but with a few important differences:
- Continuous data: Histograms are used for continuous data, such as height, weight, or temperature. This means that the data can theoretically have any value within a certain range, unlike discrete data (e.g., number of students
What is content validity?
Content validity assesses the degree to which the content of a test, measure, or instrument actually represents the specific construct it aims to measure. In simpler terms, it asks: "Does this test truly capture the relevant aspects of what it's supposed to assess?"
Here's a breakdown of key points about content validity:
- Focuses on
Study Guide for summaries with Writing Psychology Research Reports by Starreveld
Study Guide with summaries and study assistance for:
- Book title: Writing Psychology Research Reports
- Author: Starreveld
- Edition: 1st edition
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Study Guide for summaries with Statistics: The art and science of learning from data by Agresti and Franklin
Study Guide with summaries and study assistance for:
- Book title: Statistics
- Subtitle: The art and science of learning from data
- Authors: Agresti and Franklin
- Edition: 4th edition
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This chapter explains how reliability and measurement errors affect the results of behavioral research. Awareness of these effects is crucial for behavioral research.
- Which two sources of information can help evaluate an individual test score?
- On which two factors does the correla...
When we measure a physical or psychological trait of an object or person, we only measure one trait of object or person. However, you can investigate multiple questions/items that ultimately lead to a certain dimension/trait. These are called composite scores. In this chapter, the concept of dimensi...
Test scores can be used to estimate reliability scores and to estimate the measurement error. In this chapter three methods are discussed for estimating reliability: (1) alternate forms of reliability (also known as a parallel test); (2) test-retest reliability; (3) internal consistency. This c...
Studiegids met samenvattingen en studiehulp voor:
- Boektitel: Psychometrics: An introduction
- Auteurs: Furr
- Druk: 4e druk, 3e druk en 2e druk
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Samengestelde samenvatting, gebaseerd op de SPSS Survival Manual van Pallant, 6e druk uit 2016. Deze samenvatting is zowel te gebruiken bij versie 24 van IBM SPSS als bij andere versies. Bij gebruik van andere versies kan het voorkomen dat de opties een soortgelijke naam hebben gekregen of een ...
Introduction to Statistics: in short
- Statistics comprises the arithmetic procedures to organize, sum up and interpret information. By means of statistics you can note information in a compact manner.
- The aim of statistics is twofold: 1) organizing and summing up of information, in ...
Definitions and explanations of the most important terms generally associated with Introduction to Statistics
Recognizing commonly used statistical symbols
- Recognizing commonly used statistical symbols
- Commonly used greek symbols
- Commonly used latin symbols
- Commonly used mathematical symbols
- More knowledge and assistance for recognizing statistical symbols ...
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Samenvattingen en studiehulp voor Introduction to the Practice of Statistics van Moore & McCabe
Definitions and explanations of the most important terms generally associated with Introduction to Statistics
Bevat aantekeningen, begrippenlijsten en oefenvragen voor het vak Kennismaking met Onderzoeksmethoden en Statistiek aan de Universiteit Utrecht (2022/2023)
In deze bundel vind je de aantekeningen en begrippenlijsten van alle werkgroepen en hoorcolleges van het vak Toepassing en Onderzoeksmethoden en Statistiek, Psychologie, Universiteit Utrecht.
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Deze bundel bevat een samenvatting van SPSS en is gebaseerd op de 24e versie. De volgende delen zijn beschikbaar: Wat is SPSS: een introductie (1) Definities en begrippen in SPSS (2) Afhankelijke en onafhankelijke variabelen (3) Meetschalen van variabelen (4) Gemiddelden berekenen (5) Variantie bere...
In de bijlage vind je twee oefententamens (en antwoorden) bij deeltoets I voor het vak Statistiek III. Gegeven aan de Rijksuniversiteit Groningen, als onderdeel van jaar 2 bachelor psychologie. Tentamen 1 bestaat uit 25 vragen met antwoorden Tentamen 2 bestaat uit 23 vragen met antwoorden Statist...
- Hoe denk je als een psycholoog? - TentamenTests 1
- Welke verschillende bronnen van informatie zijn er en waarom is empirisch onderzoek de beste bron? - TentamenTests 2
- Welke verschillende claims en vormen van validiteit kunnen consumenten van onderzoek controleren? - Tenta...
- Hoofdstuk 1 Data
- Hoofdstuk 2 Het onderzoeken van datagegevens
- Hoofdstuk 3 Associaties tussen twee variabelen
- Hoofdstuk 4 Data verzamelen
- Hoofdstuk 5 Kansen
- Hoofdstuk 6 Opsomming van kansen
- Hoofdstuk 7 Betrouwbaarheidsinterval
- H...
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