Year 12s: what will be the first way you research your future options? >>

OCR Research methods unofficial mark scheme 2019

Mp:
- chi square does not require data to be ranked.
- primary data.
- -0.8 for the correlation.
- naturalistic observation= behaviour is observed where is it most likely to occur.
- Field experiment= it has an independant variable.
- For one question I got Mann-whitney U.
- The sample for Baron-cohen used was self-selected.
- Criterion validity= when one measure predicts the value of another related measure.
- For the question that asked which one would you use a line graph on, I put D

Reply 1

kirigiri

D on the line graph was about time of day and something else, right?

not sure as to the answers to all of these, but some other questions that were asked;

- median is better to use than mode when...
- which of these is representativeness
- what does this symbol mean (i think it was ~)
- what is a type 1 error (?)
- the dv of simons and chabris

- 15 marker:
• how you'd get your sample(?)
• how you'd operationalise extroversion
• an ethical consideration
• how you'd control an extraneous variable
- how would you get secondary data on weight
- why is getting secondary data on weight a good thing

- draw a bar chart representing this data
- calculate degrees of freedom
- what is the critical value
- write a significance statement
- what is a strength of nominal data in this study
- what is a weakness of nominal data in this study
- calculate the percentage of use of the bins with steps to 2 sf
- draw two conclusions from this study
- question about type 2 errors(?) (the error not in multiple choice)