what is the difference between continious frequency distribution and discreet frequency distribution

If a variable can take any value between two specified values, it is called Continuous Frequency Distribution

Eg. Suppose the fire department mandates that all fire fighters must weigh between 150 and 250 pounds. The weight of a fire fighter would be an example of a continuous variable; since a fire fighter's weight could take on any value between 150 and 250 pounds

If a random variable is a discrete variable,its probability is called a discrete probability distribution

Suppose you flip a coin two times. This simple statistical experiment can have four possible outcomes: HH, HT, TH, and TT. Now, let the random variable X represent the number of Heads that result from this experiment. The random variable X can only take on the values 0, 1, or 2, so it is a discrete random variable

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