Podcast
Questions and Answers
What is the parameter representing the mean or expectation of the normal distribution?
What is the parameter representing the mean or expectation of the normal distribution?
Which theorem states that the average of many samples of a random variable with finite mean and variance converges to a normal distribution?
Which theorem states that the average of many samples of a random variable with finite mean and variance converges to a normal distribution?
What is the variance of a normal distribution with standard deviation $ ext{σ}$?
What is the variance of a normal distribution with standard deviation $ ext{σ}$?
What type of distribution is often used to represent real-valued random variables in natural and social sciences?
What type of distribution is often used to represent real-valued random variables in natural and social sciences?
Signup and view all the answers
What does the parameter $ ext{σ}$ represent in the normal distribution?
What does the parameter $ ext{σ}$ represent in the normal distribution?
Signup and view all the answers
What is the formula for calculating the standard score (z-score) of a raw score?
What is the formula for calculating the standard score (z-score) of a raw score?
Signup and view all the answers
What type of scores have positive standard scores according to the standard score definition?
What type of scores have positive standard scores according to the standard score definition?
Signup and view all the answers
What is another common term used interchangeably with 'standard score'?
What is another common term used interchangeably with 'standard score'?
Signup and view all the answers
When computing a z-score with only a sample of observations, what should be used instead of the population parameters?
When computing a z-score with only a sample of observations, what should be used instead of the population parameters?
Signup and view all the answers
What does a negative z-score indicate about a raw score in relation to the mean?
What does a negative z-score indicate about a raw score in relation to the mean?
Signup and view all the answers
