100% de satisfacción garantizada Inmediatamente disponible después del pago Tanto en línea como en PDF No estas atado a nada
logo-home
Buscado previamente por ti
Buscado previamente por ti
logo
Summary Inferential tests 3,70 €   Añadir al carrito
Navegar rápidamente a
Vista previa
  2.  
  3. Canterbury College (CC)
  4.  
  5. Psychology
  6.  
  7. Research Methods

Resumen

Summary Inferential tests

 225 vistas  0 veces vendidas
  • Grado
  • Research Methods
  • Institución
  • Canterbury College (CC)

Psychology revision notes on 'Psychological Research and the Scientific Method'. The notes are tailored to suit the Psychology AQA A-level Specification A syllabus. The essay plans are colour coded to make revision slightly more interesting.

Vista previa 1 fuera de 4  páginas

Información del documento

  • 19 de marzo de 2016
  • 4
  • 2014/2015
  • Resumen

Temas

  • psychology
  • aqa
  • a level
  • specification a
  • psychological research and the scientific method

Escuela, estudio y materia

  • Canterbury College (CC)
  • Psychology
  • Research Methods
Todos documentos para esta materia (8)

Vendedor

avatar-seller
JasmineLawrence

Comentarios recibidos

Vista previa del contenido

INTRODUCING INFERENTIAL TESTS

 NULL HYPOTHESIS (H₀) – statement of no effect (no difference or no
correlation).
 ALTERNATIVE HYPOTHESIS (H₁) – a statement that there is an effect
between two variables.
 DIRECTIONAL HYPOTHESIS – a statement that predicts the direction
of the relationship between two variables.
 NON-DIRECTIONAL HYPOTHESIS – a statement that predicts a
difference between two variables but doesn’t suggest what
difference.

PROBABILITY
 Inferential tests are used to work out whether a difference is or is
not significant.
 These tests allow you to work out, at a given PROBABILITY, whether
a pattern in the data could have arisen by CHANCE or whether the
effect occurred because there is a real difference/correlation.
 CHANCE = refers to something with no cause.
 You can’t be 100% certain that an observed effect was not due to
chance but you can state how certain you are.
 Usually psychologists use a probability of 95%.
 This expresses the degree of uncertainty.
 It means there is a 5% chance (probability) that the results would
occur even if there was no real difference/correlation between the
two variables.
 This probability of 5% is recorded as:
P = 0.05 (P means probability)
 Sometimes psychologists want to be more certain, so may use a
stricter probability, such as p<0.01 or p<0.001.
 The chosen value of ‘p’ is called the SIGNIFICANCE LEVEL.


USING INFERENTIAL TESTS
 Inferential tests help us to draw inferences about populations based
on the samples tested.
 These tests allow us to infer that a pattern in the data is likely (or
not) to be due to chance.

OBSERVED + CRITICAL VALUES
 Each inferential test involves taking the data collected in a study +
doing some calculations to produce a single number called the TEST
STATISTIC.

Los beneficios de comprar resúmenes en Stuvia estan en línea:

Garantiza la calidad de los comentarios

Garantiza la calidad de los comentarios

Compradores de Stuvia evaluaron más de 700.000 resúmenes. Así estas seguro que compras los mejores documentos!

Compra fácil y rápido

Compra fácil y rápido

Puedes pagar rápidamente y en una vez con iDeal, tarjeta de crédito o con tu crédito de Stuvia. Sin tener que hacerte miembro.

Enfócate en lo más importante

Enfócate en lo más importante

Tus compañeros escriben los resúmenes. Por eso tienes la seguridad que tienes un resumen actual y confiable. Así llegas a la conclusión rapidamente!

Preguntas frecuentes

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.

100% de satisfacción garantizada: ¿Cómo funciona?

Nuestra garantía de satisfacción le asegura que siempre encontrará un documento de estudio a tu medida. Tu rellenas un formulario y nuestro equipo de atención al cliente se encarga del resto.

Who am I buying this summary from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller JasmineLawrence. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy this summary for 3,70 €. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

45,681 summaries were sold in the last 30 days

Founded in 2010, the go-to place to buy summaries for 14 years now

Empieza a vender
3,70 €
  • (0)
  Añadir