Statistics and Data analysis Methods

 

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Statistics and Data analysis Methods

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Latest blogs, jobs, projects, organizations, and tips tagged with: Statistics and Data analysis Methods

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 more

What 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
.......read more

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
.......read more

Aantekeningen Hoorcollege 2 - Kwantitatieve Biologie aan de UU (2023-2024)

Hoorcollege 2

Beschrijvende statistiek

  • Je probeert data te visualiseren. Ipv veel getallen in een tabel.

Je kunt:

  • Gegevens samenvatten in een tabel
  • Gegevens visualiseren in grafieken en diagrammen
  • Gegevens samenvatten in ligging (zie slides)

Variabelen kan je indelen in numeriek of categoriaal

  • Numeriek is continu of discreet, dit zijn getallen
  • Categoriaal is ordinaal of nominaal
  • Nominaal zijn labels of namen
  • Ordinaal is categorieën met een natuurlijke volgorde

Voorbeelden:

  • Levenscyclus van een organisme is categoriaal en ordinaal: ei, rups, pop en vlinder
  • Van welk type variabele is de optische dichtheid van een bacteriële cultuur:
  • Numeriek en continu, want elk positief getal is een nieuwe waarde. Ook 1,3 is iets. Hij kan niet negtaief zijn.
  • Aantal puppy’s in een worp honden: numeriek en discreet. Dat zijn gewoon 6 puppy’s.
  • Van welk type variabele is handedness linkshandig of rechtshandig.
  • Dit is categoriaal en nominaal. Het
.........Read more
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ACTIVITIES
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What is a convenience sample?

In contrast to probability sampling techniques like simple random sampling and cluster sampling, a convenience sample is a non-probability sampling method. This means individuals are selected for the study based on their availability and accessibility to the researcher, rather than following a rand...

What is a quota sample?

In the realm of sampling techniques, a quota sample falls under the category of non-probability sampling. Unlike probability sampling methods where every individual has a known chance of being selected, quota sampling relies on predetermined quotas to guide the selection process. Here's a breakdown...

What is a purposive sample?

    In the domain of non-probability sampling techniques, a purposive sample, also known as judgmental sampling or selective sampling, involves selecting individuals or units based on the researcher's judgment about their relevance and information-richness for the study. Here are th...

What is sampling error?

In statistics, sampling error refers to the difference between the value of a population parameter and the value of a sample statistic used to estimate it. It arises because samples are not perfect representations of the entire population. Here are the key points to understand sampling error:

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SUMMARIES: check or search summaries, tests and study assistance within the topic

SUMMARIES
Displaying 41 - 48 of 248
SPSS handleiding Hoofdstuk 1 Algemene informatie
  • Hoofdstuk 1 Algemene informatie
  • 1.1 Variabelen
  • 1.2 Meetschalen
  • 1.3 Handige begrippen
  • Hoofdstuk 1 Algemene informatie   1.1 Variabelen De afhankelijke variabele De afhankelijke variabele is de variabele waarover je een voorspelling doet, dus de ui...

SPSS handleiding hoofdstuk 6 Tests

spsshoofdstuk6ancova.pdfspsshoofdstuk6factorialmanova.pdfspsshoofdstuk6onewayrepeatedmeasuresanova.pdfspsshoofdstuk6correlatieenregressie.pdfspsshoofdstuk6dependentttest.pdfspsshoofdstuk6friedman.pdfspsshoofdstuk6independentttestenmann-whitney.pdfspsshoofdstuk6logisticregression.pdfspsshoofdstuk6log...

What is a hill function?

The Hill function is a sigmoidal function that is commonly used to describe the relationship between the concentration of a ligand and the response of a biological system. The function is named after its discoverer, Archibald V. Hill. What are the key characteristics of a hill function?

  • Sig...

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Summary with Managerial Statistics by Keller
  • CHAPTER A: BASICS OF STATISTICS
  • CHAPTER B: GRAPHICAL DESCRIPTIVE TECHNIQUES
  • CHAPTER C: GRAPHICAL PRESENTATIONS
  • CHAPTER D: NUMERICAL DESCRIPTIVE TECHNIQUES
  • CHAPTER E: PROBABILITY
  • CHAPTER F: DISCRETE PROBABILITY DISTRIBUTIONS
  • CHAPTER G: C...
Summary with Business Research Methods by Blumberg
  • CHAPTER A - SAMPLING
  • CHAPTER B: SURVEY RESEARCH
  • CHAPTER C – EXPERIMENTS
  • CHAPTER D: MEASUREMENT SCALES
  • CHAPTER E: QUESTIONAIRRES AND RESPONSES
  • CHAPTER F: LIST OF MAIN CONCEPTS: RESEARCH METHODOLOGY
  • CHAPTER A - SAMPLING   Th...

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Assumpties zijn voorwaarden waaraan je data moet voldoen om een bepaalde toets uit te voeren. Deze assumpties verschillen bij elke toets. Wanneer er aan deze assumpties inderdaad voldaan is, geeft een parametrische toets doorgaans een beter onderscheidingsvermogen dan een niet-parametrische test. Bi...

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Statistiek: basisbundel

Statistiek: basisbundel

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Basiscontent en samenvattingen voor statistiek, methoden en onderzoek

Statistiek en onderzoek - Thema

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Samenvatting van SPSS Survival Manual van Pallant - 6e druk

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 ...

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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 ...

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SPSS samenvatting

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...

Oefententamens voor deeltoets I - Psychologie RUG jaar 2 - Statistiek III

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...

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