Standard Error of the Mean According to the Central Limit Theorem, if you take samples from the population to measure any phenomenon, and you take the average of those samples, the histogram of those averages would be shaped like a bell curve. That distribution has the same mean as the population. The standard deviation of […]

# Category: Data

## Descriptive Statistics

Descriptive statistics describe a set of data. These include measures of central tendency, measures of variability, and frequencies. Measures of Central Tendency These measures attempt to explain a set of data with a variety of ways. The three most common measures of central tendency are: Mean (M or x̄): is the average of a set of […]

## Variables and Scales

The term criterion refers to the dependent variable and predictor typically refers to the independent variable. Criterion variables attempts to measure presumed effect while the predictor variable is the one that causes an effect. Collected data can be categorized into types of variables and scales of measurement. As mentioned before, a variable is something that […]