LO3

Question 1

Questionnaires/surveys advantages

Answer 1

Web based surveys can be distributed to many people at the same time

When answers are limited choice or boolean, comparisons are easy to view

Cheaper than interviews or panels for many people

Question 2

Questionnaires/surveys disadvantages

Answer 2

Unless it is a hard copy an internet connection is required to complete

Text answers can be time consuming to analyze

People may be more likely to lie when not face to face

Question 3

Email advantages

Answer 3

1 email can be sent to many people at once

Questionnaires can be distributed easily, cheaply, and quickly via email

most people have email addresses

Question 4

Email disadvantages

Answer 4

Unless limited choice options are provided, data will need to be analysed manually

Emails may be ignored or mistakenly sent to spam folders

Internet connection required

Question 5

Sensor advantages

Answer 5

One set up, they can be left alone

The data collected is accurate

They can be cheap because only the device and electricity needs to be paid for

Question 6

Sensor disadvantages

Answer 6

A bad position might mean no data is collected they can be tampered with

They need a supply of electricity

They may stop working without you realizing

Question 7

Interviews advantages

Answer 7

Questions can be adapted on the fly for more clarification to get more information

The human interaction can lead to more detailed and honest answers

Question 8

Interviews disadvantages

Answer 8

They can be expensive to run, and require a lot of the interviewer’s time

It is hard to interview many people in a short space of time

A physical location is needed unless it is a video interview

Question 9

A consumer panel is

Answer 9

A group of people who are asked their opinion about products or ideas

Question 10

Consumer panel advantages

Answer 10

You can question the panel on the specifics of your product or idea

The panel are likely to be engaged, as they agreed to be part of it

More people willing to take part

Responses are high

Relatively cheap

Question 11

Consumer panel disadvantages

Answer 11

They can be expensive to run, and each of the panel may require materials to test

The panel may not be diverse enough to represent normal society, so their feedback may not be useful

Question 12

Loyalty scheme advantages

Answer 12

When customers use their loyalty scheme card at checkout, their data can be tracked, so supermarket knows their habits and their shopping history.

A business wants to know what its most loyal customers are buying

They can be targeted with specific adverts or offers

It is very easy to capture a large amount of data of the customers pirchases.

You can use the data from the scheme to look for trends and patterns and make predicts of those.

Question 13

A loyalty scheme advantages

Answer 13

The business not only gets more information but also may get customers buying with them more often

Information is collected every time the customers purchases an item

Question 14

A loyalty scheme disadvantages

Answer 14

They may give their loyalty scheme account or card to friends or relatives

Customers may forget to use their card so store may not get accurate data because some sales are not recorded.

Question 15

A statistical report

Answer 15

presents information found from sampling part of the population. They are often presented by the government departments and charities

Question 16

Statistical report advantages

Answer 16

The statistics are available and presented in an easy to interpret format

Some analysis processing may have already been done for you

Question 17

Statistical report disadvantages

Answer 17

Statistics are from a sample of people, so they may not reflect the whole population

The reports statistics may not be totally relevant to your problem

Question 18

A statistical report is primary research or secondary research

Answer 18

secondary research

Question 19

Secondary research advantages

Answer 19

The data has already been collected, and so it makes the process easier and cheaper

An expert in the field may have been involved in collecting, which may mean it is more reliable and accurate

Question 20

Secondary research disadvantages

Answer 20

You may not be able to verify the source of data

the data might not be reliable, and the original collector might be biased

The data might not fully match your purpose

Question 21

What can QR codes do with information

Answer 21

Can be used to provide information

Can be used to collect information

Question 22

What is wearable technology usually used for

Answer 22

health and fitness, and entertainment and leisure

Question 23

Optical storage advantages

Answer 23

They are reliable

Good portability easy to pack and carry

Question 24

Optical storage disadvantages

Answer 24

Per unit, have a smaller capacity than alternatives

R/W speed is less than alternatives

Question 25

Magnetic storage advantages

Answer 25

Large capacity and cheap to buy

Usually reliable though failures can and do occur

Question 26

Magnetic storage disadvantages

Answer 26

Generally not portable

Generally not durable disks can break easily

There are now faster alternatives

Question 27

Solid state storage advantages

Answer 27

Generally reliable

Can be very durable

Can be portable

Very fast read/write times compared to alternatives

Question 28

Solid state storage disadvantages

Answer 28

For the same cost, they have small capacity than magnetic

Only finite writes long term reliability problems though as the technology has improved this is less of a problem

Question 29

Cloud advantages

Answer 29

Cloud is more reliable than other methods

Files can be accessed from anywhere

Back ups and version control may be available

high capacity

no need to buy hardware

Question 30

Cloud disadvantages

Answer 30

Internet connection is needed

For small users cost may be high, and is not one off monthly subscription

no control over security or location of the servers

Question 31

Data sets benefits

Answer 31

Analysis can reveal trends and patters this is called data mining

Similar data sets can interact to share data

As they are organised, searches can be done to find specific data

Question 32

Data sets drawbacks

Answer 32

As data sets grow processing time increases

Interactions between data sets can lead to data duplication this requires data cleaning

Poor data collection will lead to poor analysis - garbage in garbage out

Question 33

Applications of data stores e.gs

Answer 33

Law enforcement, education, health and fitness, entertainment and lifestyle

Question 34

Some CCTV cameras and police cars use automatic number plate recognition to record number plates how can they use this

Answer 34

They could check there store to see if something has been stolen

the DVLA data store can also be checked to make sure if it insured and has had the tax paid

Question 35

Advantages of teachers using big data sets

Answer 35

more reliable information on trends and patterns across a wider geographical sample

Having national sets means comparisons can be made between the nation and individual geographical locations

Provides a rationale for action, (tells teachers to do better if there results are below average)

Question 36

Shops can use big data stores how

Answer 36

Keep track of all products sold to ensure that popular products are reorders and stock does not run out

Data from loyalty schemes can be used to target advertisements

Question 37

Entertainment industry can use big data stores how

Answer 37

Streaming services can keep track of histories to produce recommendations big data may be filtered based on your age location and gander

Question 38

Life style on how big data stores can be used

Answer 38

Social media companies use likes and favorites to show recommended posts and encourage new follows