QBA 282 Chapter 1 (Quiz)

Which of the following is NOT an example of descriptive statistics? a. an estimate of the number of Alaska residents who have visited Canada b. a histogram depicting the age distribution for 30 randomly selected students c. the proportion of mailed-out questionnaires that were returned d. a table summarizing the data collected in a sample of new-car buyers

A. an estimate of the number of Alaska residents who have visited Canada

Quantitative data: Select one: a. are always numeric. b. may be either numeric or nonnumeric. c. are always labels. d. are always non-numeric.

a. are always numeric

Facts and figures collected, analyzed, and summarized for presentation and interpretation are called _____. Select one: a. data b. elements c. variables and elements d. variables

a. data

All data collected in a study are referred to as the _____. Select one: a. data set b. variable c. census d. inference

a. data set

In a data set, the number of observations will always be the same as the number of _____. Select one: a. elements b. variables c. data d. data sets

a. elements

The most common type of observational study is a(n)____.

a. survey

The collection of all elements of interest in a study is ________.

a. the population

Data collected over several time periods are_____data.

time series data

Arithmetic operations are inappropriate for: Select one: a. both categorical and quantitative data. b. categorical data. c. large data sets. d. quantitative data.

b. categorical data

A portion of the population selected to represent the population is called _______.

c. a sample