Critical Thinking Questions Case 10-2 in Your Database Course, Your

question 52

Multiple Choice

Critical Thinking Questions Case 10-2 In your database course, your instructor has given you a small database that has a lot of invalid data, issuing the challenge to you that you work to apply validation rules to the data and determine what checks need to be applied in order to restore integrity to the data. The instructor tells you that this is a mailing database, and yet you can see at a glance that there are some records with no data in the city field. What kind of check should you run on this field?

• A) completeness check
• B) consistency check
• C) range check
• D) check digit

Analyze the effects of cattle grazing on grassland ecosystems.

Explain the concept of the jet stream and its role in Earth's climate.

Differentiate between tornadoes and tropical cyclones, including their formation and impact.

Identify and classify different zones and ecosystems within marine and freshwater environments.

---

Definitions:

Allowable Sampling Error

The maximum error that can be tolerated in the results from a sample survey, determined by the researcher.

Confidence Level

The probability that a confidence interval will capture the true population parameter, expressed as a percentage.

Population Variance

The average of the squared differences from the Mean, for the entire population.

Zα/2

The z-score that corresponds to the critical value for a two-tailed hypothesis test at a given significance level α.