mean of the probability distribution

They describe the amount of spread in a distribution.

• mode

• variance

• standard deviation

• median

Identify the value that should be placed in the question mark.

Note: Remember your answer in each item so that you can use your time wisely.

• 0.2

• 0

• 0.3

• 0.1

Identify the value that should be placed in the question mark.

Note: Remember your answer in each item so that you can use your time wisely.

• 1.00

• 1.70

• 10

• none

Which of the following is the formula in finding the mean of the probability distribution?

• $\sqrt{\sum_{ }^{ }X\cdot P\left(X\right)}$

• $\sqrt{\sum_{ }^{ }X^2\cdot P\left(X\right)-\mu^2}$

• $\sum_{ }^{ }X^2\cdot P\left(X\right)$

• $\sum_{ }^{ }X^{ }\cdot P\left(X\right)$

Classify: The numbers of cheeseburgers a fast-food restaurant serves each day

• None of these
• Abstract
• Continuous
• Discrete

• Yes, because all of the probabilities are between 0 and 1 inclusive and the sum of all the probabilities is 1.
• No, all probabilities are not be between 0 and 1 inclusive
• No, the sum of all the probabilities is not 1.
• Yes, because the distribution is symmetric

What does this symbol represent?

• Standard Deviation

• Variance

• Mean Absolute Deviation

• Sigma