Mid-winter Break HW Assessment (Big Data)

Which of the following is not an example of a source of information that contributes to the accumulation of big data?

• Receivers in cell phones request position information from nearby cell phone towers, and this location information is communicated to cell phone companies.

• Law enforcement officials request the driver's license history for a suspect they recently apprehended.

• Search engine providers store all search terms entered by users.

• Hundreds of satellites stationed above the earth capture images of the earth’s surface.

A large data set contains information about all students in a state enrolled in public high schools. The data set contains the following information about each student:

-The grade of the student (e.g. 12th Grade)

-The name of the high school in which they are enrolled

-The gender of the student

-The ethnic background of the student

Which of the following questions could be answered by analyzing only the information from this data set?

• What is the ratio of the number students enrolled in private high schools to the number of students enrolled in public high schools?

• Is the percentage of students who are female higher in public high schools than in private high schools?

• In how many public high schools are more than 20% of students from a minority ethnic background?

• Which school district has the greatest number of students enrolled in public high schools?

A social media website has a feature which provides information on the number of posts by users which mention any given term. This post data can be filtered by date & time, geographic region, number of interactions (e.g. replies, shares) and whether images or videos were attached to the post. Which of the following questions is LEAST likely to be answerable using this feature?

• In which country were the most people posting about a certain sports event?

• Posts about which public figures generated the most interactions on the site?

• Were posts featuring videos and images more likely to generate interactions?

• About which topic did a given user read the most posts?

A hospital that has its own pharmacy keeps track of the following information. Date prescription is filled Patient name Room number Medication prescribed Cost of medication At the end of the week, all of the data is summarized into a database that is accessible by financial analysts of the hospital that can be sorted by any column in ascending or descending order. Below is a portion of this database.

• How many unique prescriptions were filled for a patient in a certain room?

• How many patients were in the hospital on a given day?

• What was the average cost paid by patients at the hospital for the medication “Lipitor”?

• On which day did the pharmacy fill the most prescriptions?

Which of the following are examples of structured data?

Select two answers.

• The glossary and index in the back of a textbook

• A video taken of a violent protest

• Letters written by young kids to Santa asking for Christmas gifts

• An address book filled with family members names and addresses