Chapter 1 practice quiz

Gallup political polls ask people their political party affiliation - Democrat, Republican or Independent. Which level of measurement is used to measure party affiliation? A) Nominal B) Ordinal C) Interval D) Ratio

A) Nominal

Data measured with an ordinal scale: A) can be ranked. B) have a meaningful value of zero. C) have meaningful differences between values. D) are quantitative.

A) can be ranked.

The general process of gathering, organizing, summarizing, analyzing, and interpreting data to assist in making effective decisions is called: A) statistics. B) descriptive statistics. C) inferential statistics. D) levels of measurement.

A) statistics

The main purpose of descriptive statistics is to: A) summarize data in a useful and informative manner. B) estimate a population characteristic based on a sample. C) determine if the data adequately represents the population. D) gather or collect data.

A) summarize data in a useful and informative manner.

A bank asks customers to evaluate the quality of drive-through service as good, average, or poor. Which level of measurement is used to measure service quality? A) Nominal B) Ordinal C) Interval D) Ratio

B) Ordinal

What type of variable is: profit earned by a corporation? A) Qualitative B) Quantitative C) Attribute D) Discrete

B) Quantitative

The main purpose of inferential statistics is to: A) summarize data in a useful and informative manner. B) estimate population characteristics based on a sample information. C) determine if the data adequately represents the population. D) gather or collect data.

B) estimate population characteristics based on a sample information.

Which of the following is an example of an attribute variable? A) Number of people employed by McDonalds, Inc. B) Personal income C) A person's gender D) Miles between oil changes

C) A person's gender

What type of variable is: number of car accidents reported in your city? A) Attribute B) Continuous C) Discrete D) Qualitative

C) Discrete

Ethics in the discipline of statistics: A) are not needed if all the calculations are performed correctly. B) should not be a concern because of random sampling. C) are required because the results of statistical analysis need to be reported honestly and objectively. D) are respected when calculating the population mean.

C) are required because the results of statistical analysis need to be reported honestly and objectively.

A sample is: A) at least 15 observations. B) a group of people. C) part of a population. D) a set of frequencies.

C) part of a population.

To study the characteristics of loan applicants, a random sample of 50 loan applicants is selected and their annual incomes are obtained. Which level of measurement is annual income? A) Nominal B) Ordinal C) Interval D) Ratio

D) Ratio