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Biased- (Not random) Unbiased-(Random) Example: (ubbiased) Woman takes random people to take a survey.
difference between survey and experiment
It is more accurate, unbiased and includes every item in the population, whereas sampling may be biased, and sampling is not totally representative.
A survey is biased when the questions are framed in a way that influences respondents to answer in a certain way or when the sample population is not representative of the target population, leading to results that do not accurately reflect the true opinions or characteristics of the group being surveyed.
differentiate between field experiment and survey and advantages
A population survey, better known as a census, entails the collection of each unit in the population. In sample survey information is collected from a subset of the population. The subset, or sample, needs to be selected carefully so that it is representative of the whole population and, if that requirement is met, statistics based on the sample are good estimators for the corresponding population parameters.
A survey is the process of collecting real world scientific data.
Asking about the shopping behaviour to people in a mall.
The collection of information from a common group through interviews or the application of questionnaires to a representative sample of that group.
Traverse survey can change to any shape which accommodate a great deal of different terrain while Triangulation survey is fixed to use of triangles
Plain surveying means the survey in which earth surface is considered as to be flat or plain i.e. its curvature is ignored. Geodetic survey is the survey in which curvature of the earth is taken into count and then surveying is done.
In math, a biased example could be when, someone asks only males to answer "do you like this product." its when the people chosen to answer the survey/sample is not random