2.Researchers studied selenium levels in beef raised in a low selenium region of the United States. The goal of the study was to compare selenium levels in the region-raised beef to selenium levels in...

2.Researchers studied selenium levels in beef raised in a low selenium region of the United States. The goal of the study was to compare selenium levels in the region-raised beef to selenium levels in cooked venison, squirrel, and beef from other regions of the United States. The data in the Excel file (se_level.xlsx or se_level.txt) are the selenium levels calculated on a dry weight basis in mg=100 g for a sample of 53 region-raised cattle

Please answer the following questions:

• Use these data to construct:
  
  
  
  1. A frequency distribution
  
  
  2. A relative frequency distribution
  
  
  3. A cumulative frequency distribution
  
  
  4. A cumulative relative frequency distribution
  
  
  5. A histogram
  
  
  6. A frequency polygon
  
  
  
  


• Describe these data with respect to symmetry and

• How many of the measurements are greater than 40?

• What percentage of the measurements are less than 25?