Data

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Data

Types of Questions

Tips

ask easier quetsions first

Start with general and then go more indepth

Intensity

give a neutral

I have no judgement

I don't know

7 point scale

Comment Boxes

Humanize the data

gets at the why?

qualitative

Open-ended

construct categories for each possible answer in advance

infinite number of possible answers

respondents write the answer out in their own words

divise a method for categorizing

Closed

lists possible answers

determine feelings/opinions

background questions

demographics

Non-random Sample

Judgement/Puposive Sampling

ask expert to define members

Systematic

once started-selection is nonrandom

where K is equal to the population size divided by the required sample size

choose the kth member in the pop.

primarily for ease and speed of identifying participants

nonrandom

produce larger sampling errors

every nth person is chosen

random Sample

Stratified Random Sampling

superior to a simple random

less variation

divided into smaller homo groups before sample

homogeneous groups within heterogeneous population

combination of independent samples

2 conditions

the selection of any member must have no influence on any other selection

each person in population has a chance to be chosen

contains least amount of sampling error

it is an unbiased sample

Data Analysis

response rate

Subtopic

sent out divided by # sent back

Ratio Analysis is the 4th Indexes???

Nominal Data

age groups, male/female (no way to find out mean of group

Ordinal data

Satifisfaction data

descriptive - report frequencies (or %

Interval Data

Surveys

Contents of a Survey

Follow-up with non-responders

Questions (survey)

Instructions

What to do if you don't know an answer

don't skip question

Cover Letter

Confidentiality of results

Who is sponsoring the survey

IRB

How it will be important to the person

Purpose - why to complete

means error

Sample Survey

disadvantages

lack of representatives

insufficient sample size

risk

unbiased sampling techniques

smallest group hsould have is 30 in a survey

get as large a population as possible

inferential statistics

representative part of a whole group

what type of scale

truer average for a 10 point scale then a 4 point scale

Definition:

The proper data will be processed correctly and efficiently to produce the information required to shed light on and provide a solution to the original problem.

4-100 point

Feelings/Perceptions

As big a scale as possible

Clearly define the problem

Decide what statistics are needed

type of questions needed