Unit 3 - Descriptive Statistics

Match it! Select the correct answer from the pull down...Good luck!

A straight line drawn through the center of a group of data points plotted on a scatter plot

Found by arranging all the values from lowest to highest and picking the middle one.

A relationship between measures of two types of quantities so that one is statistically dependent on the other.

The equation representing the relation between selected values of one variable (x) and observed values of the other (y); it permits the prediction of the most probable values of y.

A distribution of data that is not symmetric with respect to its mean.

The square root of the sum of the squared distances the values are from the mean divided by (n-1). (from a numerical sample data set of n-values)

Often denoted by r, a number between -1 and +1 that measures the strength and direction of a linear relationship between the two types of quantities.

The average of a data set. The sum of the values divided by the number of values.