The value of the cumulative distribution function F(x), where x is a particular outcome, for a discrete uniform distribution:sums to 1.lies between 0 and 1.decreases as x increases
Question
The value of the cumulative distribution function F(x), where x is a particular outcome, for a discrete uniform distribution:sums to 1.lies between 0 and 1.decreases as x increases
Solution
The cumulative distribution function (CDF), F(x), for a discrete uniform distribution has the following properties:
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Sums to 1: This is a fundamental property of all probability distributions, not just the discrete uniform distribution. The sum of the probabilities of all possible outcomes must equal 1.
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Lies between 0 and 1: The CDF, F(x), gives the probability that a random variable X will take a value less than or equal to x. Since probabilities cannot be less than 0 or greater than 1, the value of F(x) must lie between 0 and 1.
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Increases as x increases: The CDF is a non-decreasing function. This means that as x increases, the value of F(x) either increases or stays the same. For a discrete uniform distribution, the probability of each outcome is the same, so the CDF increases by the same amount for each increase in x.
Similar Questions
What is true about the cumulative distribution function (cdf) of a discrete random variable?Group of answer choicesIt is step-wise increasing and eventually approaching 1.It may take negative value; for example when the random variable of interest is temperature.Its value can decrease, but eventually it must approach 1.It is not related to the probability distribution function (pdf) of the random variable at all, because it measures different quantities compared to pdf.
The Cumulative distribution function F(x) is a
Consider a random variable X that has the probability of 0.5 foreach of the value +1 and -1. At X=-1 and +1, the values of the cumulative distribution function F(x) are 0 and 0.5 0 and 1 0.5 and 1 0.25 and 0.75
The cumulative distribution function F(x) of a continuous random variable X with the probability density function f(x) is which of the following?Multiple ChoiceThe area under f over all values that are x or less.The area under f over all values x.The area under f over all non-negative values that are x or less.The area under f over all values that are x or more.
The Cumulative distribution function F(x) is a ans. Monotonic non-decreasing function Monotonic increasing function Monotonic decreasing function none
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