Flashcards
Biology Topic 1.2
Flashcards do conjunto (9)
- 1Define 'Risk'.The probability of occurrence of some unwanted event or outcome.
- 2How would you write risk?The risk of ______ is _ out of _
a probability of __% in (state a time-frame!)
e.g. The risk of getting head lice in a year 5 class is 1 in 5 a probability of 20% in a year. - 3What can the perception of risk be?An overestimate or an Underestimate
- 4Why would we overestimate a risk?- Involuntary (not in their control)
- Un-natural
- Unfamiliar
- Dreaded
- Unfair
- Rare
- Sudden - 5Why would we underestimate a risk?- Voluntary
- Natural
- Familiar
- Looking forward to
- Common
- Long term - 6What are the categories of risk factors?Age
Heredity
Physical environment
Social environment
Lifestyle
Behaviour choices - 7What is the difference between correlation and causation?A correlation just means that as one thing happens, something else happens too.
But causation means that one thing has a direct effect on another thing. - 8What is Spearman's Rank coefficient? D = difference in rank (order placement) N = Number of individuals in the sample
- 9How do you calculate Spearman's rank?1. Rank each set of data from the lowest value to the highest.
2. Calculate the difference in rank.
3. Square the difference.
4. Work out the sum of the squared differences.
5. Put values into the formula and use the critical value to determine whether there is a correlation. (r must be bigger than the critical value)
Informações
- Descrição
- New AS level Biology topic 1.2 Who is at risk of cardiovascular disease?
- Criado por
- Amy Tourle
- Visualizações
- 11
- Avaliação