ATI TEAS 7
ATI TEAS Practice Science Test
1. Which term is used interchangeably with negative variation?
- A. Non-correlation
- B. Direct correlation
- C. Inverse correlation
- D. Positive correlation
Correct answer: C
Rationale: The correct answer is C: Inverse correlation. Negative variation is synonymous with inverse correlation, indicating that as one variable increases, the other decreases. This relationship is the opposite of positive correlation, where both variables increase or decrease together. Non-correlation and direct correlation do not convey the concept of negative variation and are not interchangeable terms in this context. Non-correlation refers to variables that are not related or associated, while direct correlation indicates that as one variable increases, the other also increases. Positive correlation describes a relationship where both variables increase together, which is the opposite of negative variation.
2. Identify the incorrect usage of punctuation in the following sentence: 'The children, eager to play, ran outside; it was a beautiful day.'
- A. comma after 'children'
- B. comma after 'play'
- C. period after 'outside'
- D. no errors
Correct answer: C
Rationale: The sentence contains two independent clauses that should be separated by a semicolon or period, not a comma. The incorrect punctuation is the period after 'outside.' A period or semicolon is needed to correctly separate the two independent clauses. The comma after 'children' and 'play' are correctly used to set off non-essential participial phrases. Choice D is incorrect as there is a punctuation error in the sentence.
3. How do you find the least common multiple?
- A. List all multiples of the numbers, then find the smallest common one
- B. List all factors of the numbers, then find the largest common one
- C. Divide the largest number by the smallest
- D. Multiply the two numbers together
Correct answer: A
Rationale: The correct way to find the least common multiple is to list all the multiples of each number and then identify the smallest common multiple. Choice A is correct because it describes the correct process. Listing factors, as suggested in choice B, helps in finding the greatest common factor, not the least common multiple. Dividing the largest number by the smallest, as mentioned in choice C, does not help find the least common multiple. Multiplying the two numbers together, as stated in choice D, results in their least common multiple when the numbers have no common factors.
4. A cell has a diameter of 0.1 meter, and another cell has a diameter of 0.05 meters. How many times larger is the first cell compared to the second cell?
- A. 2
- B. 4
- C. 8
- D. 16
Correct answer: A
Rationale: To determine how many times larger the first cell is compared to the second cell, divide the diameter of the first cell by the diameter of the second cell: 0.1 / 0.05 = 2. Therefore, the first cell is 2 times larger than the second cell. Choice B, C, and D are incorrect because they do not provide the accurate calculation for the size difference between the two cells.
5. Which word choice best fits the blank: 'Her research paper was riddled with _____ errors.'
- A. flagrant (obvious and inexcusable)
- B. cursory (superficial)
- C. innocuous (harmless)
- D. meticulous (carefully detailed)
Correct answer: A
Rationale: The word 'flagrant' in option A is the most appropriate choice for the blank because it conveys the idea of errors that are glaringly obvious and inexcusable. In this context, the research paper is described as being 'riddled with errors,' suggesting a significant amount of mistakes that stand out and are severe. Choice B, 'cursory,' meaning superficial, does not accurately describe the seriousness of the errors. Choice C, 'innocuous,' meaning harmless, is the opposite of what is implied by the sentence. Choice D, 'meticulous,' meaning carefully detailed, is the opposite of what is needed to describe errors in this context.
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