Q1. 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
Q2. 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
Q3. Which of the following variables use the interval scale of measurement?
- name of stock exchange
- time
- SAT scores
- Social Security number
Q4. 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
Q5. 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
Q6. Which of the following graphical methods is most appropriate for categorical data?
- ogive
- pie chart
- histigram
- scatter diagram
Q7. 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
Q8. 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