random assignment

random assignment

Random assignment is a method of assigning subjects to one experimental condition or another; it helps us rule out confounding variables by ensuring that any variables that affect our outcome variable, whether positively or negatively, will balance each other out across groups.

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    • random process

      Random process means that all possible outcomes have a predictable chance of coming up; whereas we often think that random means unpredictable, random processes, the way statisticians think of them, are actually highly predictable, governed by a ...

    • random sampling

      Random sampling means every case in the population has an equal probability of being selected for the study.

    • observational study

      Observational study is a research design that involves taking a random sample from a population and then measuring some variables; also known as a correlational study.

    • correlational study

      Correlational study is a research design that involves taking a random sample from a population and then measuring some variables; also known as an observational study.

    • do()*

      The do()* function runs one or more lines of code the number of times specified inside the parentheses and returns the results as a data frame. Example 1: # take a random sample (n=10) of a variable, with replacement, # and calculate the standard ...