ZZZ
The Z-score formula.
What is (xbar-mu)/standard dev?
Normal distributions are symmetrical around the _____.
What is the mean?
The Excel formula for standard normal distributions.
What is NORM.S.DIST?
______ is used to compute the margin of error when sigma is assumed or given.
What is the z-critical value?
The number of standard errors away from the mean.
What are critical values?
Z-score values that are considered outliers.
What are greater than 2 or less than -2?
The mean, and the median of a normal distribution are_____.
What are equal?
The two factors that the normal distribution depend on.
What are the mean and standard deviation?
Add and subtract the margin of error from the sample mean to find ______.
What are the upper and lower limits?
This Excel formula computes T-critical values.
What is T.INV?
The Excel function to find a Z-score is ____.
What is there is not a specific function in Excel?
The percentage of data that will fall within each of the first three cumulative standard deviations is ______.
What is 68-95-99.7?
This formula transforms a probability into a Z-score.
What is NORM.S.INV/ NORM.INV?
The sample mean is also known as _______.
A: What is the point estimate?
T and Z critical values both use _____ as inputs into their respective Excel formulas.
What is level of confidence?
The Z-score measures _____.
What is distance from the mean?
The normal distribution's shape is _____.
What is a bell curve?
Excel formula for normal distributions that aren't your standard customer.
What is NORM.DIST?
_______ is used to compute margin of error when sigma is unknown.
What is the t-critical value?
This Excel formula computes Z-critical values.
What is NORM.S.INV?
The Z-score when the data point is 6, the mean is 4, and the standard deviation is 2.
What is 1?
The 68-95-99.7 theory is called _____.
What is the Empirical Rule?
If you plug in a number greater than 1 into NORM.S.INV, this happens.
What is an error?
The formula for margin of error.
What is critical value * standard error?
Other than level of confidence, T-critical values also need ____.
What are degrees of freedom?