Executive Summary is a document that summarises all the sections of a market research report. Experience Survey is a survey involving participants who have knowledge of a particular situation. Experiment is the process of manipulating one or more independent variables and measuring their effect on one or more dependent variables, while controlling for external variables. Experimental Error is the error caused by the conditions of the experiment itself and it creates uncertainty that the observed effects may not be due to the manipulation of the independent variable. Experimental Treatments are the different conditions created by manipulating the independent variable.
Experimental Units are the objects or people who are part of the experiment.
Exponential Smoothing is a statistical technique that calculates a moving average where the most recent data are given a different weight to earlier data. External Secondary Data are existing data that have already been collected by other organisations. External Validity is the extent to which experimental results can be projected to a population of interest. Extraneous Variables see external variables.