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.
An attribute of 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.
The main purpose of inferential 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.
B. Estimate a population characteristic based on a sample.
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.
The incomes of a group of 50 loan applicants are obtained. Which level of measurement is income?
A. Nominal
B. Ordinal
C. Interval
D. Ratio
D. Ratio
A bank asks customers to evaluate the drive-thru service as good, average, or poor. Which level of measurement is this classification?
A. Nominal
B. Ordinal
C. Interval
D. Ratio
B. Ordinal
If Gallup, Harris and other pollsters asked people to indicate their political party affiliation - Democrat, Republican or Independent - political party affiliation would be an example of which scale of measurement?
A. Nominal
B. Ordinal
C. Interval
D. Ra
A. Nominal
What type of variable is the profit earned by a corporation?
A. Qualitative
B. Quantitative
C. Attribute
D. Discrete
B. Quantitative
What type of variable is the number of car accidents reported in your city?
A. Attribute
B. Continuous
C. Discrete
D. Qualitative
C. Discrete
Which of the following is an example of attribute data?
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.
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.
Personal 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 hones
C. Are required because the results of statistical analysis need to be reported honestly and objectively.