![]() ![]() If you choose to perform PCA, you will select handful of predictor variables and drop(remove) the remaining variables, while doing so the Target Variable remains the same. Generally, if you have data of very high dimensionality and a target variable, you will have to reduce the number of dimensions (depending upon the scenario) either you will decide to go will all the predictor variables or choose a dimensionality technique such as PCA(Principal Component Analysis). No, if you read the description above your question is invalid. ![]() Question: Whats an independent variable Answer: An independent variable is exactly what it sounds like. There are two types of variables-independent and dependent. An element, feature, or factor that is liable to vary or change. What are Independent and Dependent Variables Question: Whats a variable Answer: A variable is an object, event, idea, feeling, time period, or any other type of category you are trying to measure. If I find that a variable is not a predictor variable, does that mean it automatically becomes a target variable? Requiring great skill or finesse in handling or treatment. The above quantities are determined prior to the experiment, the person who is conducting the experiment has to come up with a problem statement and once he does, he determines which variables are predictor variables and which one is the target variable. Target Variable - A variable that needs to be predicted is a target variable. Predictor Variable - One or more variables that are used to determine(Predict) the 'Target Variable'.
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