Answer:
An incorrect sample frame can destroy a study, regardless of the sample size.
Explanation:
There are major three known errors that were detected during the survey research of the political poll taken by Literary Digest about the Landon vs Roosevelt election.
These errors were
* Sampling error-- The telephone directories, automobiles that were sampled, were mostly sampled middle/upper class
* Timing -- The questionnaires were mailed in early September, they did not measure the changes in public opinions as the election drew closer.
* Self-selection-- It should be understood that an individual cannot select himself/herself into a sample. This is because,the more wealthy and educated do that so the results are entirely accurate
<span>b. Spam. These types of emails are most often sent in large numbers to large groups of addresses. They are very often commercial in nature, requesting the user buy something or navigate to a specific website. The reason they are used is due to the low cost of the email and it's large reach.</span>
According to research, OPSEC countermeasures are planned actions to affect collection, analysis, delivery.
<h3>What is OPSEC?</h3>
It is a security and risk management strategy and process that classifies information and then determines what is required to protect sensitive information.
Applying the appropriate countermeasures is the last step in implementing an OPSEC plan that will reduce risks consisting of planned actions to affect collection, analysis, delivery.
Therefore, we can conclude that according to research, OPSEC countermeasures are planned actions to affect collection, analysis, delivery.
Learn more about OPSEC countermeasures here: brainly.com/question/17437694
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Answer: Every operator must keep a proper lookout
Explanation:
