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Tutor profile: Christina R.

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Christina R.
Librarian and Information Management Professional
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Questions

Subject:Library and Information Science

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Question:

Amy wants to find articles for her research on social media. Her research involves how students use social media in their leisure time; she is not interested in how they use it for career development. Amy decides she wants to find information about Facebook and Twitter, but decides to exclude LinkedIn from her study. Create a Boolean statement for Amy to use when she searches the library's databases.

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Christina R.

Subject:Psychology

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Question:

Researchers have observed that the more churches there are in a town, the higher the crime rate of that town. Can we infer from this observation that having more churches causes a higher crime rate?

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Christina R.

We cannot infer from this research alone that having more churches in a town causes a higher crime rate. The relationship between these two variables (number of churches and crime rate) is only correlational. In other words, we know that there is a relationship between these two variables, but we do not know the direction of the relationship; it could be that a higher crime rate actually causes a town to build more churches, not the other way around. Alternatively, it could be that a third variable is the cause of this relationship. For example, it could be that as population increases, a town builds more churches and other infrastructure, and the crime rate also goes up. In order to ascertain a cause-and-effect dimension of this relationship, researchers would need to conduct an experiment, wherein they systematically manipulate one of the variables and observe the effect on the other variable, all while controlling for possible third variables.

Subject:English

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Question:

Identify and explain the grammatical error present in the following sentence: As the days passed, the flower had less petals left on it.

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Christina R.

This sentence has misused the word "less". Because petals are a countable noun, the correct word to use in this sentence is "fewer". The sentence should read: As the days passed, the flower had fewer petals left on it. "Less" is the appropriate word to use when a writer is referring to an entity that cannot be counted, such as water (e.g. After I took a drink, there was less water in the cup.).

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