​CONCLUDE

​to think about carefully and form an opinion.

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​The principal finally concluded that he had done nothing wrong.

​REFERENCE

​A source of information

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​The dictionary is an excellent reference for writers.

​IDENTIFY

​to figure out or show who someone is or what something is.

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​The scientist identified the bird as a rare kind of parrot.

​DATA

​Facts, figures, or other pieces of information that can be used to learn about something.

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Data about population growth is constantly being collected by governments.

​INVESTIGATE

​to look into carefully and closely so as to learn facts.

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​After she investigated the problem, the scientist discovered a solution.

​VARIABLE

​Something that can change or that has no fixed value

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When deciding which medicine is right, a doctor must look at many variables, such as age and weight of the patient.

​ANALYZE

​to examine and explain

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​If we analyze the problem, perhaps we can solve it.

​VARIOUS

​of different kinds

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​I have various reasons for wanting to quit the team.

​COLLECT

​to gather together

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​I collected papers that had fallen on the floor.

​PREDICT

​To tell in advance that something will happen

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​The coach and players predicted an easy victory.

​OBSERVE

​to notice or see

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​The students observed that the plant had grown pretty tall.

​DEFEND

​to speak, write, or act in support of

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​The scientist defended his conclusion by showing us his data.

​DEFINE

​to explain or state the meaning of

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​The teacher asked me to define the word "demolish".

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​ORGANIZE

​to set in order; arrange in an orderly way

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I organized my papers in my math folder.

​EXPERIMENT

​a carefully planned test used to discover something unknown.

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​We used special equipment for the experiment.

​INTERPRET

​to decide on or explain the meaning of

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​How do you interpret the data your recorded?