Business Stats 271 SP25: Midterm Study Guide

Analytics is generally thought to comprise three broad categories of techniques that include all of the following except _____ analytics.

• prescriptive

• predictive

• descriptive

• diagnostic

Categorical data

• must be numeric.

• must be nonnumeric.

• cannot be numeric.

• may be either numeric or nonnumeric.

In a post office, the mailboxes are numbered from 1 to 4,500. These numbers represent

• categorical data.

• quantitative data.

• either categorical or quantitative data.

• since the numbers are sequential, the data is quantitative.

Which of the following is a categorical variable?

• Your age when you began college

• Your Social Security Number

• Your statistics class start time

• Your birth year

Census refers to a(n)

• experimental study to collect data on the entire population.

• experimental study to collect data on a sample.

• survey to collect data on a sample.

• survey to collect data on the entire population.

Facts and figures that are collected, analyzed and summarized for presentation and interpretation are

• variables.

• elements.

• time series data.

• data.

The major applications of data mining have been made by companies with a strong _______ focus.

• wholesale

• manufacturing

• consumer

• research and development

In a data set, the number of elements will always be the same as the number of

• independent variables.

• observations.

• data points.

• dependent variables.

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

Measurement of body temperature is an example of a variable that uses

• the ratio scale.

• the interval scale.

• the ordinal scale.

• either the ratio or the ordinal scale.