Practical Biological

a Devise and conduct one practical, which must be a test of difference collecting ordinal or interval/ratio data using an independent groups design.

Suitable examples:

a comparison of test scores from males and females on verbal ability and spatial ability comparing left and right handed people with their scores on tests of different abilities or preferences.

b Carry out a Mann-Whitney test and interpret the findings

Note: with regard to inferential tests no calculations will have to be carried out in the examinations and formulae do not have to be learnt.

c Write up the hypothesis, results and analysis of the study using an appropriate graph and a table of the results. Draw brief conclusions, considering issues of validity, reliability, credibility and generalisability.