What kind of statistical tests are there? These and many other questions are discussed in this chapter. In addition, you will also learn about different types of variables, parametric and non-parametric tests, p-values and many other things which you will need in order to understand explanations provided in the following chapters.Natalia Levs...
Use it when you want to analyze categorical data to determine if there is a relationship between two variables or if the distribution of categorical variables differs from what would be expected by chance. What are the types of chi-square tests? How is the chi-square test calculated? What ar...
Types of Statistical TestsIn terms of selecting a statistical test, the most important question is "what is the main study hypothesis?". For example, nQuery has a vast list of statistical procedures to calculate sample size, in fact over 1000 sample size scenarios are covered. However, it ...
Some teams may target 90% to reduce the sample size and speed up results, but this increases the risk of inaccurate findings. Several factors can prevent you from reaching statistical significance, including: Not enough time to run tests Pages with very low traffic Changes that are too small ...
Currently there are two influential approaches to language testing, the psychometric- structuralist approach and the psycholinguistic-sociolinguistic approach. The linguistic basis of the psychometric-structuralist approach is mainly structuralist linguistics, and the aim of such tests is to discover the learn...
You’ll probably be conducting the t-tests in a spreadsheet or statistical program (like Excel or SPSS). However, if you’d like to do the math by hand, the formulas for the other two types of t-tests are included below.2. Calculate the degrees of freedom...
What are the main types of statistical analysis? The two main types of statistical analysis are descriptive statistics (which summarizes the characteristics of given data) and inferential statistics (which draws conclusions about a larger population from given sample data). ...
There are two types of quantitative data: discrete and continuous. Continuous data can be further divided into interval data and ratio data. Discrete data In reference to quantitative data, discrete data is information that can only take certain fixed values. While discrete data doesn’t have to...
What are Type I (or alpha) and Type II (or beta) errors in statistical hypothesis testing? Illustrate each with an example. What is decalcification in histopathology? What are the types of biogeography? What do adenovirus type 7 and papillomaviruses have in common? What is a chloride blood ...
What types of tables might be used to describe some of the statistical tests? Why do exploratory research designs rely so much on qualitative research techniques? Define qualitative and quantitative research. Compare and contrast the two approaches. What...