HSW Flashcards

1
Q

Valid conclusions (4)

A
  • Large sample size SO representative
  • Long study SO can allow…. / see effect of X
  • Control used SO comparison can be made.
  • Mean & SD SO significant differences can be determined.
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2
Q

Limitations:

You can only use the information provided (6)

A
  • Small sample size, not representative;
  • Only sampled males, females may respond differently to treatment;
  • Only tested on …….. in a lab, in the wild, may obtain different pattern in data;
  • Only tested on …….. species, might not be true for all species;
  • No STATS test so differences could be due to chance;
  • Data is SUBJECTIVE, some people may have lied.
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3
Q

Null hypothesis (4)

A
  • [x] will have no effect on [y]
  • E.g. Temperature will have no effect on rate of reaction
  • There will be no correlation between age and weight
  • There will be no difference between the observed and expected ratio of 3:1 brown eyes to blue eyes
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