8) Ch10: Data Set

Question 1

Data Set

Answer 1

Collection of organized observations and measurements

Question 2

Flat Files (Spreadsheets)

Answer 2

Simple format for data sets designed for smaller/simple data sets; numerical data (can accommodate text)

• Good for mathematical fxns involving data
  
  • Advantages = Simple to create the data set, Able to view all data at once
• Not efficient for manipulating text-based data
  
  • Disadvantage = Large data sets can become difficult to manage

Question 3

Rows

Answer 3

On a spreadsheet, different cases or pt’s

Question 4

Columns

Answer 4

Study Variables

Question 5

Relational Database

Answer 5

Multidimensional organizational tools/software that can accommodate numerical and text data(complex collection of data); Multiple spreadsheets linked by common identifiers designed for larger/complicated data sets

Question 6

Transformed Data

Answer 6

Raw data that has been converted to a different format for analysis or reporting, such as conversion of actual age to age groups

Question 7

Data Recording Form

Answer 7

Form to record data on the variables of interest; Useful for reducing data omissions and translation errors

Question 8

Coding Handbook

Answer 8

Recording of steps taken prior to data collection to strengthen the methods of any outcome study; Roadmap for the study bc it contains terms, operational definitions, assigned numerical codes, and other procedures that occur during data harvesting

• Should include:

1. Find desired variables
2. Determine the format for recording each variable → Bc things can be written out in multiple ways
3. Convert text data into numerical codes (1=Female, 2=Male)
4. Create procedures for storing data → Physical location of data, Security, etc
5. Create accounting procedures → Need to know who does/did what Exception log → History of decisions; For recording decisions that are made when data does not conform to the rules; Helpful when it comes time to interpret the data

Question 9

Nominal Data

Answer 9

Codes given to characteristics so there’s no set order, origin, or distance

Question 10

Ordinal Data

Answer 10

Has a set order which implies some sort of rank

• “0” means true absence
• SES

Question 11

Interval Data

Answer 11

Data points that have no origin/true 0

• Temp
• IQ

Question 12

Ratio Data

Answer 12

Data points have an absolute 0 w/equal increments between points

• Distance
• TIme
• Age
• Reps

Question 13

Sample of Convenience

Answer 13

Subjects are of easy access bc they’re already there so you use them