lesson 6

The branch of science that deals with the collection, organization, presentation, analysis, and interpretation of data.

The collection of all elements under consideration in a statistical inquiry.

A subset of the population.

A characteristic or attribute of the elements in a collection that can assume different values for the different elements.

A summary measure describing a specific characteristic of the population.

A summary measure describing a specific characteristic of the sample

Concerned with the procedures and techniques used in the collection, presentation, organization, analysis, and interpretation of data.

Concerned with the development of the mathematical foundations of the methods used in applied statistics.

Includes all the techniques used in organizing, summarizing, and presenting the data on hand.

Includes all the techniques used in analyzing the sample data that will lead to generalizations about a population from which the sample came.

Descriptive measures that are used to describe the center of a set of data, arranged numerically.

The most common type of average; it is the sum of all the observed values divided by the number of observations.

The value that divides the array into two equal parts.

The observed value that occurs with the greatest frequency in a data set.

A type of mean calculated by multiplying the weight (or probability) associated with a particular event or outcome with its associated quantitative outcome, and then summing all the products together.

Data which are arranged in a frequency distribution.

the preferred measure of central tendency when one does not want extreme scores to influence the average. It divides the distribution into two equal parts using the less than cumulative frequency (<cf). The median class lies where half of the observation is located in the cumulative frequency

The mode in a frequency distribution is within the class interval with the highest frequency, known as the modal class.