Lab Review
Density of a Paper Clip (Parts 1 and 2)

StudentCode Password
Enter each group member's
StudentCode and password

and class period (1-8)

General Questions.
  Please use the following data to answer this series of statistical questions.

A group of students recorded the following values for their density of a paper clip.

7.24 g/cm
8.03 g/cm
6.52 g/cm
7.77 g/cm
7.46 g/cm
7.00 g/cm
7.28 g/cm
7.77 g/cm
1.  What is the range of this data?

2.  What is the mean of this data?  

3.  What is the mode of this data?  

4.  What is the median of this data?  

5.  If the standard deviation for this data group was 0.45 g/cm, how far from the mean is the most extreme value of 8.03 g/cm?   

General Questions.  Please use the following graph of Mass vs Volume to answer the next series of questions.

reviewdensity.gif (5658 bytes)

1.  Which variable belongs on the x-axis?   on the y-axis?

2.  What are the co-ordinates of two gridpoints?

3.  Calculate the slope of this line.

4.  If mass is measured in grams and volume in cm, what are the units for the slope of this line? What physical property does this slope represent?

5.  Calculate the y-intercept for this line.

6.  What is the equation for this line?

7.  Using the equation in #6, interpolate the value for the mass when the volume is 4 cm.

8.  If 20 cm of a material has a measured mass of 125 grams, would you suspect it of being made of the same material as the items graphed above?

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Catharine H. Colwell
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Mainland High School
Daytona Beach, FL 32114