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Preview

DA 6.6: Plan a data search

This is the first page of the lesson. Read it and have a go at the activities. The rest is in the full lesson.

50 minutes

Typing "data trends"

You type "data trends" and press Enter. You get a million results: films, jobs, games and adverts.

A short plan before you search saves hours. It tells you what to type, and where the answer is likely to be kept.

Key words

WordWhat it meansExample
Data requirementthe exact information you need to find
Parametera limit that shapes a searchthe last three years, the UK only
Search termthe words you type into a search
Big datadata so large or fast that ordinary tools struggle with it
Trenda way the numbers move over time, such as rising or falling
Digital economythe part of the economy that runs on digital goods and services
Biasan unfair lean towards one side
Dataseta collection of records on one subject, kept together

The cells students fill in are left blank in this preview.

By the end of this lesson

Note

I can turn a topic into a clear search, set its parameters and name the sources that hold the data.

Starter

Have a go

Starter

3 questions
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Your answers are marked here and are not kept. A college account keeps every student’s marks.

Worked example: from topic to search

PartExample
TopicIdentify trends in big data jobs
Data requirementHow many UK job adverts mention big data each year?
ParametersUK only, the last five years, yearly counts
Sources that hold itA statistics site, a jobs board report, a professional body survey
Search termsUK job adverts big data yearly count

The cells students fill in are left blank in this preview.

Clarify the topic first

A topic such as "the future of the digital economy" is far too wide. Ask what exactly you need. Which place? Which years? Which measure?

Write one clear sentence, your data requirement. Then add the parameters. Now you know what to type.

Which sources hold which data

Different data lives in different places. Counts of people and firms are on statistical websites. Opinions are in surveys and blogs. Methods are in books and journals. Trends in tools are in vendor reports and conferences.

Match the place to the question before you search. A dataset may be a file you can download, so check it is the version you need.

The lesson goes on

5 more parts of this lesson are in the full curriculum, with the tasks, the final check and the labs. A college account gives your students all of it.