# Is rolling two dice a continuous random variable?

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## What is the random variable of rolling two dice?

A random variable is a rule (or function) that assigns a number to each outcome of a random experiment. Usually, random variables are denoted by a letter like X or Y. For rolling a pair of dice, you could let X be the sum of the numbers on the top. Then you would write the probability that the sum is 6 as P(X=6).

## What type of random variable is a dice roll?

A discrete random variable is a random variable that can take on any value from a discrete set of values. The set of possible values could be finite, such as in the case of rolling a six-sided die, where the values lie in the set {1,2,3,4,5,6}.

## Is number of students discrete or continuous?

Discrete: Number of children, number of students in a class. Continuous data (like height) can (in theory) be measured to any degree of accuracy. If you consider a value line, the values can be anywhere on the line.

## Is rolling a dice discrete data?

It is discrete; the results can only be some specific whole numbers (2,3…

## What is the probability of rolling a 7 with two dice?

Probabilities for the two dice

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Total Number of combinations Probability
4 3 8.33%
5 4 11.11%
6 5 13.89%
7 6 16.67%

## How do you solve a random variable?

The formula is: μx = x1*p1 + x2*p2 + hellip; + x2*p2 = Σ xipi. In other words, multiply each given value by the probability of getting that value, then add everything up. For continuous random variables, there isn’t a simple formula to find the mean.

## What are all the possible outcomes of rolling 2 dice?

Note that there are 36 possibilities for (a,b). This total number of possibilities can be obtained from the multiplication principle: there are 6 possibilities for a, and for each outcome for a, there are 6 possibilities for b. So, the total number of joint outcomes (a,b) is 6 times 6 which is 36.

## What is the mean of rolling two dice?

The mean is the type of average most people are used to. To find the mean for a set of numbers, add the numbers together and divide by the number of numbers in the set. For example, if you roll two dice thirteen times and get 9, 4, 7, 6, 11, 9, 10, 7, 9, 7, 11, 5, and 4, add the numbers to produce a sum of 99.

## What are two examples of continuous variables?

Examples of continuous variables are body mass, height, blood pressure and cholesterol. A discrete quantitative variable is one that can only take specific numeric values (rather than any value in an interval), but those numeric values have a clear quantitative interpretation.