Statistics Vocabulary Quiz

Returns the percentage of data that falls between two z-scores.

True or False: The Standard deviation is a better measure of dispersion for skewed data.

The middle value, with half falling beow and half faling above.

This is the formula to find?

The difference between a predicted value and an actual value.

A useful family of models used for unimodal, symmetric distributions.

True or False: The sign of a correlation gives the strength of the association.

The rule that tells us that 68% of the data in a normal distribution falls 1 S.D. from mean?

A variable that is not part of the model but which can affect relationship between them.

The variable that is assigned to x.

True or False: An outlier doesn't affect the mean of a distribution.

The word that implies that there is a relationship between one variable and another.

The variable of interest that is assigned to the output

This formula is used to find?

Extreme values that don't seem to belong to the rest of the data.

Used to find the z-score given a percentile.

The value obtained by subtracting the mean and dividing by the standard deviation.

True or False: Changing the units of variable does not affect the correlation coefficient.

The measure of dispersion used with a symmetric distribution.

True or False: The IQR is a measure of central tendency.