(4) DATA

Question 1

What is primary data and what are its pros and cons (1 pro, 1 con)

Answer 1

• What it is
○ Og data collected SPECIFICALLY FOR PURPOSE OF INVESTIGATION
○ By the researcher
○ First hand from participants themselves
• PROS
○ Authentic
• CONS
○ Effort and time

Question 2

What is secondary data and what are its pros and cons (1 pro, 1 con)

Answer 2

Secondary data
• What it is
○ Data collected by someone other than the person conducting experiment
○ “Desk research”
○ Subject to statistical testing
• PROS
○ Inexpensive, minimal effort
• CONS
○ Quality & accuracy lackin
§ Could be outdated/incomplete

Question 3

What are the 3 ways of presenting data

Answer 3

Bar chart, histogram, scattergram

Question 4

When is a bar chart used and what are the three things you need for it

Answer 4

Presenting data:
• Bar chart
○ When study involves categories
○ For discrete data
§ (Counting in whole numbers)
○ Need 3 things:
§ Title
§ Y axis conditions
§ X axis conditions
○ Bars don’t touch

Question 5

When is a histogram used

Answer 5

• Histogram
○ Represents distribution of numerical data
○ For continuous data
§ For measurement, infinite range
○ Bars touch

Question 6

When is a scattergram used

Answer 6

For correlation