A binomial random variable is a unique type of discrete random variable that counts the frequency of occurrence of a particular event in a fixed number of trials. Several conditions must be met for a variable to be decla... More »

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A binomial distribution is a probability distribution that has only two possible outcomes which sum up to one and have fixed probabilities. Binomial distributions typically represent a binomial random variable, which is ... More »

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Use a random number generator by providing a range of numbers from which to generate one number and then initiating it to start. The generator outputs a random number from within the provided range. More »

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In its most basic definition, a contextual variable is a variable that is constant within a group, but which varies by context. The concept is used in sociological and business research, as well as in the fields of stati... More »

A direct formula is a formula that represents the proportionate change of two variables in the same direction such that when one variable increases/decreases the other variable also increases/decreases. The direct variat... More »

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A random number table is used in statistical experiments to enable random sampling of test subjects. This ensures that all subjects have an equal and independent chance of being selected in the study. More »

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The average cost of pet sitting depends on the type and number of pets, the geographic location, the type of care needed, and the frequency of pet sitting. Typically, dog and cat pet sitters in major metropolitan areas c... More »

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