1. Which of the following is an example of quantitative data?
the player's number on a baseball uniform
the serial number on a one-dollar bill
the part number of an inventory item
the number of people in a waiting line
2. When the data have the properties of ordinal data and the interval between observations is expressed in terms of a fixed unit of measure, the variable has which scale of measurement?
nominal
ordinal
interval
ratio
3. Which of the following variables use the interval scale of measurement?
name of stock exchange
time
SAT scores
Social Security number
4. Which of the following is not an example of descriptive statistics?
a histogram depicting the age distribution for 30 randomly selected students
an estimate of the number of Alaska residents who have visited Canada
a table summarizing the data collected in a sample of new-car buyers
the proportion of mailed-out questionnaires that were returned
5. A frequency distribution is
a tabular summary of a set of data showing the fraction of items in each of several nonoverlapping classes
a graphical form of representing data
a tabular summary of a set of data showing the number of items in each of several nonoverlapping classes
a graphical device for presenting categorical data
6. Which of the following graphical methods is most appropriate for categorical data?
ogive
pie chart
histigram
scatter diagram
7. The proper way to construct a stem-and-leaf display for the data set {62, 67, 68, 73, 73, 79, 91, 94, 95, 97} is to
exclude a stem labeled ‘8'
include a stem labeled ‘8' and enter no leaves on the stem
include a stem labeled ‘(8)' and enter no leaves on the stem
include a stem labeled ‘8' and enter one leaf value of ‘0' on the stem
8. The total number of data items with a value less than or equal to the upper limit for the class is given by the
frequency distribution
relative frequency distribution
cumulative frequency distribution
cumulative relative frequency distribution