Probability & Statistics 6.2 Vocabulary

"The sum (or average) of a large number of independent and identically distributed random variables will tend towards a normal distribution, regardless of the underlying distribution of the individual variables, as long as the sample size is sufficiently large" is the same as

• The Central Limit Theorem

• Null Hypothesis

• Alternative Hypothesis

• Confidence Interval

A(n) _______ is a statistical measure that indicates how many standard deviations a data point is from the mean of a population or sample.

• Confidence interval

• Point estimate

• Z-score

• Alternative Hypothesis

A ________ is a numerical value that describes a characteristic of a population.

• Statistic

• Parameter

• Sampling distribution

• Standard error

A ________ is a probability distribution of a statistic computed from a sample taken from a population.

• Parameter

• Central Limit Theorem

• Confidence Interval

• Sampling distribution.

What is a single value that is used to estimate an unknown parameter of a population based on sample data?

• Point estimate

• Parameter

• Confidence level

• Standard error

A(n) _____ is a measure of the variability of a statistic from sample to sample.

• Confidence level

• Hypothesis test

• Standard error

• z-score

The probability that a confidence interval contains the true value of a population parameter is also known as _______.

• Test statistic

• p-value

• z-score

• Confidence level

A(n) _____ is a range of values that is likely to contain the true value of a population parameter with a certain degree of confidence.

• Alternative hypothesis

• Null hypothesis

• Confidence interval

• Confidence level

A(n) ________ is a statement that there is no significant difference between two groups or variables.

• Alternative hypothesis

• Null hypothesis

• Confidence level

• Confidence interval

A(n) _________ is a statement that there is a significant difference between two groups or variables.

• Confidence interval

• Confidence level

• Alternative hypothesis

• Null hypothesis