Exam 2: Descriptive Statistics: Tabular and Graphical Displays

A sample of the ages of 10 employees of a company is shown below. Construct a dot plot for the above data.

Exhibit 2-3 A survey of 800 college seniors resulted in the following crosstabulation regarding their undergraduate major and whether or not they plan to go to graduate school. -Refer to Exhibit 2-3. What percentage of the students' undergraduate major is engineering?

Construct a stem-and-leaf display for the following data.

The frequency distribution below was constructed from data collected from a group of 25 students. a.Construct a relative frequency distribution. b.Construct a cumulative frequency distribution. c.Construct a cumulative relative frequency distribution.

Exhibit 2-4 Michael's Compute-All, a national computer retailer, has kept a record of the number of laptop computers they have sold for a period of 80 days. Their sales records are shown below: -Refer to Exhibit 2-4. If one develops a cumulative frequency distribution for the above data, the last class will have a frequency of

Which of the following graphical methods shows the relationship between two variables?

The sum of frequencies for all classes will always equal

When a histogram has a longer tail to the right, it is said to be

If several frequency distributions are constructed from the same data set, the distribution with the widest class width will have the

A histogram is

The sum of the relative frequencies for all classes will always equal

For the following observations, plot a scatter diagram and indicate what kind of relationship (if any) exist between x and y.

The percent frequency of a class is computed by

The following data shows the price of PAO, Inc. stock over the last 8 months. a.Develop a scatter diagram and draw a trend line through the points. b.What kind of relationship exists between stock price and time (negative, positive, or no relation)?

A researcher is gathering data from four geographical areas designated: South = 1; North = 2; East = 3; West = 4. The designated geographical regions represent

Data that provide labels or names for categories of like items are known as

Thirty students in the School of Business were asked what their majors were. The following represents their responses (M = Management; A = Accounting; E = Economics; O = Others). a.Construct a frequency distribution and a bar chart. b.Construct a relative frequency distribution and a pie chart.

Exhibit 2-3 A survey of 800 college seniors resulted in the following crosstabulation regarding their undergraduate major and whether or not they plan to go to graduate school. -Refer to Exhibit 2-3. Among the students who plan to go to graduate school, what percentage indicated "Other" majors?

A student has completed 20 courses in the School of Arts and Sciences. Her grades in the 20 courses are shown below. a.Develop a frequency distribution and a bar chart for her grades. b.Develop a relative frequency distribution for her grades and construct a pie chart.

For the following observations, plot a scatter diagram and indicate what kind of relationship (if any) exist between x and y.