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| Section | Objectives |
|---|---|
| Verbal Skills | - Language Usage
|
| Science | - Basic Chemistry
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| Mathematics | - Word Problems
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>> Latest NEX Practice Questions <<
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NEW QUESTION # 97
The mean and standard deviation (SD) of the heights (in centimeters) of four groups of teenage boys are shown below:
Based on this information, which group has the least variability in height?
Answer: D
Explanation:
This question tests understanding of standard deviation as a measure of variability. The group with thesmallest standard deviation has the least variability. Comparing the values, Group 3 has the smallest SD at 6.9.
Therefore, option D is correct. The mean does not affect variability; only the SD matters in this comparison.
The NEX often includes questions where students must interpret statistical summaries rather than perform calculations. Remember that lower SD values indicate data points are more closely clustered around the mean.
NEW QUESTION # 98
Word Knowledge
The word"stable"most nearly means:
Answer: A
Explanation:
Stable describes something that is steady, consistent, or not changing. Option C best reflects this meaning.
NEX exams frequently use stability-related vocabulary in clinical scenarios.
NEW QUESTION # 99
You are staining bacterial samples for identification and viewing them under a microscope.
Which bacterial shape do you observe in the sample?
Answer: B
Explanation:
This question tests knowledge of bacterial morphology, which is commonly assessed on the NEX Science exam. Bacteria are often classified based on their shape, which helps in identification and diagnosis. The image shows elongated, rod-shaped bacteria. This shape is characteristic ofbacilli. Bacilli are cylindrical or rod-like and are commonly found in many bacterial species, includingEscherichia coliandBacillus anthracis.
Cocci are spherical in shape, spirochetes are long and spiral-shaped, and vibrios have a curved, comma-like appearance. None of these shapes match the straight rod-like structures shown in the image. Identifying bacterial shape is an important first step in microbiology before further tests such as Gram staining or biochemical analysis are performed. The NEX exam frequently uses images or descriptions to assess whether students can correctly distinguish between cocci, bacilli, spirilla/spirochetes, and vibrios based on visual characteristics. Recognizing bacilli as rod-shaped bacteria is a key foundational concept.
NEW QUESTION # 100
Reading Comprehension
Passage:
Regular physical activity improves cardiovascular health by strengthening the heart and improving circulation. Exercise can also help manage stress, improve mood, and reduce the risk of chronic disease.
Which benefit of exercise is mentioned in the passage?
Answer: D
Explanation:
The passage lists several benefits of exercise, including improved cardiovascular health, stress management, improved mood, and reduced chronic disease risk. Option B is explicitly mentioned, making it the correct answer. The other options introduce benefits not discussed in the passage. On the NEX exam, detail-based questions require careful reading to identify information that is directly stated rather than inferred. Choosing only what is explicitly mentioned is key.
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NEW QUESTION # 101
A supply room has 18 boxes of gloves. Each box contains 120 gloves. If 25% of the gloves are used, how many gloves remain?
Answer: B
Explanation:
This problem evaluates understanding of percentages and total quantities, commonly tested on the NEX exam.
First, calculate the total number of gloves available. Multiply the number of boxes by the number of gloves per box: 18 ร 120 = 2,160 gloves total. Next, determine how many gloves were used. Since 25% were used, convert 25% to a decimal (0.25) and multiply by the total number of gloves: 0.25 ร 2,160 = 540 gloves used.
To find how many gloves remain, subtract the number used from the total: 2,160 # 540 = 1,620 gloves remaining. Therefore, option A is correct. Option C represents the original total, not the remainder. Option D reflects incorrect subtraction, and option B results from miscalculating the percentage used. On the NEX Math Section, it is critical to identify whether the question asks for the amount used or the amount remaining before selecting an answer.
NEW QUESTION # 102
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