wek 3/4 (exam1)

Question 1

why would someone choose to use a pictorial representation of data?

Answer 1

easier to understand

easier to see relationships

Question 2

what is included in the periodic table of visualization methods

Answer 2

• map
• bar chart
• table
• Cloud
• Picture
• Animation
• concept map

Question 3

What is GIS? and what are the benefits of GIS?

Answer 3

GIS - System of hardware, software, and dat used for the mapping and analysis of geographic data.

Benefits-
lets you visualize data

helps with analysis

Question 4

What is the GIS hardware?

Answer 4

computer

scanner

Question 5

What are the data sources for surveys?

Answer 5

EHR

Lab data

Non-traditional sources: pharmacies, school attendance

Surveys/Interviews/focus groups

Question 6

What is a Survey?

Answer 6

data collection tool designed to get information from individuals

it can be verbal, paper ad pencil, electronic

Question 7

explain the ethics involved in surveys

Answer 7

Surveys are a form of research

Need informed consent process

• -Who is conducting the survey and why
• -What the participant will be asked to do
• -Benefits and risks
• -Voluntary nature of participation
• -Ability to ask questions
• -How confidentiality is maintained

Question 8

Surveys should ….?

Answer 8

Have an introduction

Be clearly written with no grammatical errors

Have similar items grouped together

Be single-barrelled

Start with less sensitive questions

For questions where participants can pick only 1 answer, the response options must be:

• -Exhaustive: Includes all possible responses
• -Mutually exclusive: Response options do not overlap

Be pretested with target audience

Question 9

Survey Response Options

Answer 9

Multiple choice - 1 response option-has ratio option

Multiple Choice - Multiple answer-checkbox responses

Comment/Essay box- for open-minded questions

Matrix of choices (one answer per row)- used when you have several questions with the same response options

Question 10

Pretesting is done when? What are the General Steps?

Answer 10

Reviewing your survey with a member of the target audience PRIOR to launch

General Steps:
- Ask participant to read each question out loud, one at a time

• Ask participant:
• –To rephrase the question in their own words
• –If there are words they don’t understand
• –If they have suggestions for rewording/re-ordering
• –If the response option they would pick is there

Modify the surgery based on the feedback

How many? 5-8 is often enough

Question 11

which GIS software necessary?

Answer 11

Proprietary

• -ESRI ArcGIS
• -Cartographica

Open Source/Free

• -Mango
• -ArcExplorer
• -ArcGIS Online
• -GRASS
• -GeoDa

Question 12

Types of data used for GIS?

Answer 12

Spatial data

• -Vector
• -Raster

Tabular

Metadata

Question 13

what is vector data?

Answer 13

Points, lines, shapes

Question 14

what is raster data?

Answer 14

Contains discrete uniform cells that are coded to represent the spatial data

Question 15

what is tabular data?

Answer 15

Provides characteristics related to the spatial data

Must BE LINKED

Question 16

What is Metadata?

Answer 16

CRITICAL PIECE*

Data about data

might include the:

• date data collected
• -projection and scale
• -attribute details

Question 17

what is a query function?

Answer 17

simple data query

Uses query statements

Ex: Show me all the features with more than 10 percent of total population >= 65 years

Question 18

What are some of the issues of working with GIS?

Answer 18

Expenses

Requires training

Trouble finding data

Bad data, e.g. no metadata

Misleading maps

Question 19

What is the ultimate goal of a chart?

Answer 19

Make as clear and simple as possible, remove distractions, make sure scales make sense.

Question 20

what are word clouds good for?

Answer 20

Good conversation starter

Visual image of text with words sized according to frequency
High frequency=BIGGER)

Question 21

What are Infographics?

Answer 21

Visual representations of information and data intended to present complex information clearly and quickly