An educational psychologist investigates the effect of a new mnemonic technique on the recall of a 30-word list. Group A uses the mnemonic technique, while Group B uses standard rote rehearsal. The results are shown in the table below:
ConditionMean number of words recalledStandard deviationGroup A (Mnemonic)21.41.8Group B (Rote Rehearsal)14.65.2 \begin{array}{|c|c|c|} \hline \text{Condition} & \text{Mean number of words recalled} & \text{Standard deviation} \\ \hline \text{Group A (Mnemonic)} & 21.4 & 1.8 \\ \hline \text{Group B (Rote Rehearsal)} & 14.6 & 5.2 \\ \hline \end{array} ConditionGroup A (Mnemonic)Group B (Rote Rehearsal)Mean number of words recalled21.414.6Standard deviation1.85.2Which of the following is the most accurate interpretation of these descriptive statistics?
Participants using rote rehearsal recalled more words on average, and their performance was more consistent than those using the mnemonic technique.
Participants using the mnemonic technique recalled more words on average, and their performance was less consistent than those using rote rehearsal.
Participants using the mnemonic technique recalled more words on average, and their performance was more consistent than those using rote rehearsal.
Participants using the mnemonic technique recalled more words on average, and the difference between the highest and lowest scores in Group A was exactly 1.81.81.8.
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.