Alg1 M14L1 Vocabulary - Measures of Center & Variation

Outlier

• A data point that is significantly different from other data points in a data set.

• A data point that is the average of all data points in a data set.

• A data point that is the most frequently occurring in a data set.

• A data point that is the smallest value in a data set.

Range

• The difference between the highest and lowest values in a data set.

• The average of all values in a data set.

• The sum of all values in a data set divided by the number of values.

• The value that appears most frequently in a data set.

Median

• The average of a list of numbers.

• The middle value in a list of numbers, which divides the data into two halves.

• The highest value in a list of numbers.

• The lowest value in a list of numbers.

Standard Deviation

• A measure of the amount of variation or dispersion in a set of values.

• A method to calculate the average of a set of numbers.

• A technique used to find the median of a dataset.

• A way to determine the mode of a set of values.

Data Transformation

• When each value in a numerical data set is multiplied by a real number k, where k > 0, the measures of center and variation can be found by multiplying the original measures by k.

• The measures of center and variation remain unchanged when each value in a numerical data set is multiplied by a real number k.

• The measures of center increase while the measures of variation decrease when each value in a numerical data set is multiplied by a real number k.

• The measures of center and variation can only be found by adding a constant to each value in the data set.

Measure of Variation

• A statistical term that describes the spread or dispersion of a set of data.

• A method for calculating the mean of a dataset.

• A technique used to visualize data distributions.

• A measure of central tendency in statistics.

Mode

• The average value of a data set.

• The value that appears most frequently in a data set.

• The middle value when the data set is ordered.

• The range of values in a data set.

Mean

• The average of a set of numbers, calculated by dividing the sum of all values by the number of values.

• The middle value in a set of numbers when arranged in order.

• The largest value in a set of numbers.

• The difference between the highest and lowest values in a set of numbers.

Measure of Center

• Mean

• Range

• Standard Deviation

• Variance