What is a random variable?

Probability and Outcomes in Dice

Interactive Video
•
Mathematics
•
9th - 10th Grade
•
Hard

Thomas White
FREE Resource
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13 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A variable with a fixed value
A variable that is always zero
A variable whose value is determined by chance
A variable that always increases
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does a probability distribution describe?
The sum of all outcomes
The average of all outcomes
The probabilities of different possible outcomes
The outcomes of a single event
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the coin flip example, what is the random variable X defined as?
The total number of flips
The number of tails
The number of times the coin lands on edge
The number of heads
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many possible outcomes are there when flipping a coin three times?
6
10
8
4
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the probability of getting no tails in three coin flips?
1/8
2/8
4/8
3/8
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is the probability distribution used to construct a histogram?
By summing all probabilities
By calculating the average number of tails
By plotting the number of tails against their probabilities
By listing all possible outcomes
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the dice roll example, what is the random variable X defined as?
The number of dice
The product of the numbers
The sum of the numbers on top
The difference between the numbers
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