Skip to content

Course home

Data recording, analysis and presentation

Data recording, analysis and presentation

EasyMedium
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348
Question 294

In order to perform a chi-square test, the expected values (EEE) of each category of data collected must be calculated first. What is the expected value (EEE) of the data in category cell (a) in the following contingency table?

Category XCategory Y
Group 1(a) 15(b) 25
Group 2(c) 45(d) 15
Expected value (E)=Row total×Column totalN \text{Expected value } (E) = \frac{\text{Row total} \times \text{Column total}}{N} Expected value (E)=NRow total×Column total​
A

15

B

24

C

40

D

60

Markscheme

Data recording, analysis and presentation Questions

  1. A Level
  2. /Psychology
  3. /Data recording, analysis and presentation

513 exam-style questions on OCR A Level Psychology Data recording, analysis and presentation. Each one has a worked solution and a mark scheme showing where the marks go.

Question bank