In the 1940s, Stanley Smith Stevens introduced four scales of measurement: nominal, ordinal, interval, and ratio. These are still widely used today as a way to describe the characteristics of a variable. Knowing the scale of measurement for a variable is an important aspect in choosing the ri...
What is a Variable? The definition of a variable changes depending on the context. Typically, a letter represents them, and it stands in for a numerical value. In algebra, a variable represents an unknown value that you need to find. For mathematical functions and equations, you input their ...
An example of a test using a dichotomous independent (input) variable is the independent samples t-test, illustrated below.In this test, the dichotomous variable defines groups of cases and hence is used as a categorical variable. Strictly, the independent-samples t-test is redundant because it...
What is data type example? A string, for example, is a data type that is used to classify text and an integer is a data type used to classify whole numbers. ... When a programming language allows a variable of one data type to be used as if it were a value of another data type...
FreeSync is built using the Adaptive Sync Standard. This is an open standard that other manufacturers can use in their equipment without royalties. And because of this FreeSync costs less than its G-Sync alternatives. FreeSync pros and cons FreeSync monitors are highly effective against that ...
What is the most common value in a distribution called? Define and give an example of Discrete variables. What is the random variable to use as a measure of the effective of the programs? Which type of distribution does the graph illustrate?
an important fact: The boundary lines of the 95% interval on the Standard Error scale are always -2 and +2 (they’re actually -1.95996… and +1.95996…, but I’m rounding to -2 and +2 for the present purposes). Let’s clarify all this by looking at several exam...
What is the difference between an area graph and a line graph? Line and area graphs both display continuous ranges moving across a two-dimensional plane. They are most commonly used to track changes in a variable over time. However, area graphs shade the space between the line and the horiz...
For a simple example, the marks a student obtains in an exam is a result of the hard word measured in the number of hours put behind studying and the intelligence measured in IQ are the independent variables. The marks obtained thus represents the dependent or outcome variable. When the valu...
A confidence intervalis a range of values, bounded above and below the statistic's mean, that likely would contain an unknown population parameter.Confidence levelis the probability (percent of certainty) that the confidence interval would contain the true population parameter when you draw a random...