ρ (g/cm³) 
1.32 
1.46 
0.85 
1.68 
1.34 
1.22 
0.68 
1.11 
1.09 
1.40 
MS 150 Statistics quiz three • Name:
The table is a sample of soap densities as measured by the SC 130 Physical Science students fall 2009.
 __________ What is the level of measurement?
 __________ Find the sample size n.
 __________ Find the minimum.
 __________ Find the maximum.
 __________ Find the range.
 __________ If this data is divided into five classes, what is the width of a single class?

Determine the frequency and calculate the relative frequency using five classes.
Record your results in the table provided.
Class upper limits  Frequency F  Relative Frequency p(x) 
  
  
  
  
  
Sums:   
 Sketch a frequency histogram of the data, labeling your horizontal axis and vertical axis as appropriate.
 __________ What is the shape of the histogram?
 __________ [Toughie] How many different brands of soap appear to have been used in the laboratory?