Graphs & Charts Flashcards
1
Q
What is a bar chart?
A
A bar chart is used to show discrete data(data in categories) which are not related
2
Q
How is a bar chart different for a histogram?
A
Histograms can show continuous data(related data) but bar charts only show discrete data
3
Q
What is a histogram?
A
A histogram shows data which is continuous(where they are all related to one category)
4
Q
What are the three types of scattergraphs?
A
- Positive correlation
- Negative correlation
- No correlation
5
Q
What is correlational analysis?
A
Showing the relationship between two variables
6
Q
What are advantages and disadvantages of correlational analysis?
A
Advantages include: -Relevance to everyday life -Identifies the presence/absence of a relationship between variables Disadvantages include: -Time consumption -Not establishing cause & effect
7
Q
What is a correlation coefficient?
A
A number between +1 & -1 telling us how closely the variables are associated
