**Which of the following is the median of the date set below?**

**-6, 8, -4, 12, 1**

8

1

-4

12

*Correct Answer : B*

The median of the data set is the number that falls in the middle position after arranging the numbers in the data set in the ascending order.

-6, -4, 1, 8, 12

There are 5 numbers in the given data set, therefore the median falls in the third position from either side. Inspecting the data set, 1 fall in the third position, which is the median for the given data set.

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The SI units of measuring length is meter. However, a meter can be a large unit or small quantity depending what is being measured. Therefore, derived units of meters are used to measure the length of an object. In our case, centimeters is the appropriate unit to measure the width of the window.

### Correct Answer is D

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In this case, we use a calculator to estimate the positive square root of 42.** **

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### Correct Answer is B

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Letting x represent the number of students enrolled in dental hygiene care, we set the proportion equation with number of students as numerator and percentage as denominator. It should be noted that the whole pie chart represents 100% of the 800 students. Then,

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### Correct Answer is D

#### Explanation

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### Correct Answer is A

#### Explanation

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### Correct Answer is D

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### Correct Answer is A

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