Author: Anonymous

Determine whether the following is an example of a sampling error or a non sampling error. A psychiatrist surveyed 8000 people to see the proportion who had seen a psychiatrist at least once in their lives. Unfortunately, there was confusion amongst the respondents about the difference between a psychologist and a psychiatrist and the recorded proportion was higher than it should have been due to this confusion.  

A fitness center is interested in the average amount of time a client exercises in the center each week. Match the vocabulary word with its corresponding example.  

Sixty adults with gum disease were asked the number of times per week they used to floss before their diagnoses. The (incomplete) results are shown below: # Flossing per Week Frequency Relative Frequency Cumulative Relative Frequency 0 27 0.4500   1 18     3     0.9333 6 3 0.0500   7 1 0.0167   What percent of adults flossed 7 times per week? Round to one decimal place.  

Fifty part-time students were asked how many courses they were taking this term. The (incomplete) results are shown below: # of Courses Frequency Relative Frequency Cumulative Relative Frequency 1 30 0.6   2 15     3       Determine the Cumulative Relative Frequency for taking 2 classes.  

A cardiologist is interested in the average recovery period for her patients who have had heart attacks. Match the vocabulary word with its corresponding example.  

Ski resorts are interested in the average age that children take their first ski and snowboard lessons. They need this information to optimally plan their ski classes. Match the vocabulary word with its corresponding example.  

Political pollsters may be interested in the proportion of people that will vote for a particular cause. Match the vocabulary word with its corresponding example.  

200 people are asked how many siblings they have? The (incomplete) results are shown below: Siblings Frequency Relative Frequency Cumulative Relative Frequency 0 20 0.1   1 90     2 60     3 0     4       What percent of the people have exactly 4 siblings? Give your answer as a percent and not a decimal. And there is no need to type in the %.   

A marriage counselor is interested in the proportion the clients she counsels that stay married. Match the vocabulary word with its corresponding example.  

A bank manager is interested in the average length of time that customers are willing to wait in line before they give up and leave the bank. Match the vocabulary word with its corresponding example.