So here's the problem with this kind of survery: "The sampling using Dynata is based on opt-in sampling, respondents deliver high quality data, they are diverse and have community norms of honesty and accuracy [7]. The survey was opened to the Dynata panel until the required number of
responses was obtained from each category of the strat…
So here's the problem with this kind of survery: "The sampling using Dynata is based on opt-in sampling, respondents deliver high quality data, they are diverse and have community norms of honesty and accuracy [7]. The survey was opened to the Dynata panel until the required number of
responses was obtained from each category of the stratification variables age, sex, and income, as required for a balanced response set. With opt-in sampling there is no response rate as classically defined in survey research"
In other words, this is a self-selecting sample rendering it useless for analytical purpose. All statistical theory revolves around having a "RANDOM SAMPLE". It's that simple. Anything else may not be used to dray ANY CONCLUSIONS about POPULATION. This quackery use of statistics is completely out of control. And now they have resorted to what they call "panels". These people are paid to take surveys! Is that the kind of data collection NASA should use? Engineers?
So here's the problem with this kind of survery: "The sampling using Dynata is based on opt-in sampling, respondents deliver high quality data, they are diverse and have community norms of honesty and accuracy [7]. The survey was opened to the Dynata panel until the required number of
responses was obtained from each category of the stratification variables age, sex, and income, as required for a balanced response set. With opt-in sampling there is no response rate as classically defined in survey research"
In other words, this is a self-selecting sample rendering it useless for analytical purpose. All statistical theory revolves around having a "RANDOM SAMPLE". It's that simple. Anything else may not be used to dray ANY CONCLUSIONS about POPULATION. This quackery use of statistics is completely out of control. And now they have resorted to what they call "panels". These people are paid to take surveys! Is that the kind of data collection NASA should use? Engineers?