Answer:(C) Contamination
Explanation: "Contamination" is the term that is used for the the irrelevant data or data that is not useful.This process is usually done after a certain period of time to remove the unnecessary data .IT helps in the reduction of the space of data storage and it can be further utilized.
Thus the Crimson Inc. is using the tool to gather the contaminated data and to eliminate it.
The inference shows that double Dutch became popular after it became a success in New York and Eastern US.
<h3>What is an inference?</h3>
It should be noted that an inference simply means the conclusion that can be deduced based on the information given.
In this case, the inference shows that double Dutch became popular after it became a success in New York and Eastern US.
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Answer:
A cross-sectional study
Explanation:
Cross-sectional study:
It is a study that indicates to look in data of a population at a specific point of time. The population is selected based on a specific interest area or a variable of interest. Theses study are often used in developmental psychology but these methods also utilize in another area of the population. These studies are also called observational studies or descriptive studies. Theses studies are not relational or causal. We can not use these studies to determine the cause of something, like a disease. This type of study is used to describe the characteristics of the population rather than the cause and effect of the population. These type of study takes place at a single point in time. Even it does not involve manipulating variables.
thousands of scientists have found that exercise helps virtually every age-related condition that people encounter.
<h3>What is exercise?</h3>
This is a term that has to do with all physical activities that people engage in order to get a better fitness of the body.
Exercises are necessary because it helps to ensure that the person is functioning well and has better health.
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