Essentials Semester 1 Exam

What is the average (mean) of the following numbers: 12, 15, 18, 21, 24?

• 15

• 18

• 20

• 21

Which temperature is equivalent to 25°C?

• 77°F

• 68°F

• 82°F

• 298.15K

A set of measurements is considered precise but not accurate when:

• The values are far from the true value but close to each other

• The values are close to the true value and spread out

• The values are both close to the true value and close to each other

• The values are neither close to the true value nor close to each other

Convert 5 kilometers to meters:

• 50 meters

• 500 meters

• 5,000 meters

• 50,000 meters

What is 98.6°F in Celsius?

• 32°C

• 37°C

• 42°C

• 45°C

Which metric conversion is correct?

• 1 liter = 100 milliliters

• 1 meter = 100 centimeters

• 1 gram = 100 kilograms

• 1 kilometer = 100 meters

Convert 0 Kelvin to Celsius:

• 0°C

• −273.15°C

• −32°C

• −100°C

In a data set, which measure represents precision?

• How far the values are from the accepted value

• The average of all measurements

• How close the values are to each other

• The sum of all values divided by the count

Convert 2.5 liters to milliliters:

• 25 mL

• 250 mL

• 2,500 mL

• 25,000 mL

In a position vs time graph, position is the dependent variable. Where does the dependent variable, like position, go on a graph?

• A. X-axis

• B. Y-axis

• C. In the Title

• D. In the Key