[…]subjects, including the philosophy of acquire new knowledge. He questioned conventional manners, condition and beliefs so successfully that he 399 BC was executed. His disciples were scattered after the death of Socrates. Rationality versus empiricism One of Socrates students was Plato (427-347 BC) who were around Socrates for approximately seven years […]
[…]för att ladda ner pratstunden som en textfil (om du vill återanvända en del svar från Science Ronny). Test av alternativa chatbotar. Nedanstående chat bottar är inte så praktiska utan mer ett experiment för att visa några exempel på vad som finns tillgängligt. För närvarande har du sannolikt mer utbyte […]
[…]not always ethical or possible and the only way is to use existing retrospective observations. Traditionally retrospective observations has been analysed using multivariable regression where treatment allocation has been one of many independent variables. Propensity score matching (PSM) is a new technique allowing retrospective data to be used for group […]
[…]of the nominal scale. Scales of measures and choice of statistics Descriptive statistics Addition and subtraction are meaningless if the scale of measure does not have equidistant scale steps. This means for that you can’t calculate sum-score, average or do a subtraction to work out change. The latter causes problems if […]
[…]råd för att välja statistisk metod Samvariation Samvariation analyseras nästan alltid med någon form av regressionsanalys. I regressionsanalyser talar man om beroende och oberoende variabler. Man letar efter hur stor del av variationen i den beroende variabeln som förklaras av variationer i de oberoende variablerna. I de flesta regressionsanalyser har […]
[…]statistics Choosing statistical analysis Associations and predictions Regression and correlation This web-page provides an introduction to Cox regression. Reading this will give you an understanding of Cox regression and how to use it. What is Cox regression? Prerequisites (assumptions) Introduction to pre-requisites (assumptions) Cox regression is usually labelled “Cox proportional […]
[…]do the opposite, that is, creating new theories purely based on observation of the reality you unconditionally explore. Hence, in grounded theory there is no prior hypothesis to test. Grounded theory originated in sociology and hence focus on what happens in relations between people. Grounded theory is an empirical-holistic approach which […]
[…]increases and approaches 0.05 the 95% confidence interval for effect size will approach the limit for no effect. Hence, the p-value and the effect size are merely the opposite sides of the same coin. Magnitude of effect size The table below are rough rules of thumb that should be adjusted […]
[…]not have an order with equidistant scale steps). All variables are transformed using the function for natural logarithms. A standard linear regression is made where the outcome is transformed back using the inverse of natural logarithms (e.g. the exponential function). The beta coefficients produced by the logistic regression is often […]
[…]below or above the predetermined level of significance (alpha). We can reject the null hypothesis and consider the alternative hypothesis to be most likely if our p-value is below the predetermined alpha. The null hypothesis can not be rejected in the opposite case with a higher p-value and the result […]
