Exam 2: Organizing and Graphing Data

Use the following to answer questions : The following table gives the cumulative frequency distribution of the commuting time (in minutes)from home to work for a sample of 400 persons selected from a city. -The percentage of persons who commute for less than 30 minutes,rounded to two decimal places,is:

Use the following to answer questions : The following table gives the frequency distribution of the highest degrees held by 25 professionals. -The number of persons who possess a Doctorate is:

When preparing a frequency distribution,the lower limit of the first class should always be:

The procedure for obtaining the midpoint of a class is to:

Use the following to answer questions : The following table gives the cumulative frequency distribution of annual incomes (in thousands of dollars)for a sample of 200 families selected from a city. -The percentage of families with an income of less than $55,000,rounded to one decimal place,is:

Use the following to answer questions : The following table gives the cumulative frequency distribution of the commuting time (in minutes)from home to work for a sample of 400 persons selected from a city. -You ask 27 people what kind of pet they own.Seven people have dogs,five have cats,three have birds,and the remainder have no pets.The relative frequency of dog owners,rounded to three decimal places,is:

Use the following to answer questions : The following table gives the cumulative frequency distribution of the commuting time (in minutes)from home to work for a sample of 400 persons selected from a city. -For the observation 4,the stem is:

Use the following to answer questions : Suppose you have the following stem-and-leaf display: Stem: Tens Leaf: Ones -What is the sum of the data values in the bottom two branches in this display?

We obtain the relative frequency of a category by:

Use the following to answer questions : The following table gives the cumulative frequency distribution of annual incomes (in thousands of dollars)for a sample of 200 families selected from a city. -The cumulative percentage for the second class,rounded to one decimal place,is:

Use the following to answer questions : The following table gives the cumulative frequency distribution of annual incomes (in thousands of dollars)for a sample of 200 families selected from a city. -The number of families with an income of $85,000 or more is:

Use the following to answer questions : The following table gives the frequency distribution of the number of telephones owned by a sample of 50 households selected from a city. -The number of classes for this frequency distribution table is::

Use the following to answer questions : The following table gives the frequency distribution of rents paid per month by 500 families selected from a city. -The midpoint of the second class is:

Use the following to answer questions : The following table gives the cumulative frequency distribution of annual incomes (in thousands of dollars)for a sample of 200 families selected from a city. -The cumulative relative frequency of the fourth class,rounded to three decimal places,is:

We construct an ogive to graph a:

Use the following to answer questions : A highway patrolman records the following speeds (in mph)for 25 cars that pass through his radar within a five-minute interval.Here is the histogram of that data: -The relative frequency of drivers whose speed is less than 55 mph,rounded to two decimal places,is?

Use the following to answer questions : Here is a dot plot of the daily high temperature (in Fahrenheit)from a sample of 25 U.S.cities: -Which high temperature has the highest frequency?

Use the following to answer questions : The following table gives the frequency distribution of the highest degrees held by 25 professionals. -The number of persons with a Master's degree as their highest degree is:

Use the following to answer questions : The following table gives the frequency distribution of the number of telephones owned by a sample of 50 households selected from a city. -The percentage of households which do not own a telephone is:

Use the following to answer questions : The following table gives the frequency distribution of rents paid per month by 500 families selected from a city. -The width of each class in this frequency table is: