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Data handling and analysis

Data handling and analysis

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Question 146

A sports scientist investigated two training methods designed to improve the motor coordination of professional tennis players.

Twelve players were randomly assigned to one of two conditions:

  • Condition 1: Six players underwent a 'Strobe-Glass Training' program (wearing visual-restriction goggles during practice) for two weeks.
  • Condition 2: The other six players underwent a 'Traditional Shadow-Play' program (performing standard footwork and racquet drills) for two weeks.

Each player's motor coordination was assessed at the start and at the end of the two-week period using a standardized motor coordination index (where higher scores indicate greater coordination).

Table 1: Mean and standard deviation of coordination scores for both conditions at the start and end of the two-week period

Strobe-Glass TrainingTraditional Shadow-Play
Start of studyEnd of studyStart of studyEnd of study
Mean coordination score72.488.674.176.8
Standard deviation11.43.210.910.5

What do the standard deviation values for the Strobe-Glass Training condition suggest? Justify your answer.

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Markscheme

Data handling and analysis Questions

  1. A Level
  2. /Psychology
  3. /Data handling and analysis

235 exam-style questions on AQA A Level Psychology Data handling and analysis. Each one has a worked solution and a mark scheme showing where the marks go.

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