Statistics refers to the collection, analysis, interpretation and presentation of data. Its functions include presenting facts in simple form, testing hypothesis, facilitates comparison and forecasting.
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In statistics, a graph and a chart are the same. In arithmetic, a graph is the plot of a function over values. There are no charts.
The range of a function is the set of values that the function can take. In the context of probability and statistics, it is the difference between the maximum value and the minimum value that a variable can take.
Pi is relevant to statistics students as it (for example) appears in the well known normal distribution probability density function.
In statistics, a likelihood function (often simply likelihood) is a function of a statistical model. The likelihood of a set parameter values, given outcomes x, is equal to the probability of those observed outcome.
It depends on whether fx denotes frequency times variable value or the probability generating function for the variable x.