Developing thinking in statistics by Alan Graham

By Alan Graham

Designed to intensify wisdom of statistical principles, this finished and research-based textual content explores 4 major subject matters: describing, evaluating, inter-relating, and uncertainty.

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C (a) Read these three comments carefully and make an evaluation about what they seem to be saying. (b) What are your own interpretations of these findings? There is, however, a corollary to this result, namely, that it must follow that the women were better than the men in reading the faces of their own sex. If you are unsure about the validity of this conclusion, consider the following simple, made-up example based on a sample of three men and three women. 2, when the three men viewed pictures of men, they were poor at reading their expressions, leading to an average of 50% success (column 1).

How could you measure intuition and what sort of data would your investigation yield? Cognitive psychologists define intuition as the fast processing of information, so that the person is able to make a judgement before knowing the reasons for their choice. There are many possible questions and ways of investigating intuition. One that was carried out by Professor Richard Wiseman of the University of Hertfordshire is whether women’s powers of intuition exceed those of men. An account of this investigation can be found in the 12 April 2005 issue of the Daily Telegraph (Fleming, 2005).

For example, there may have been changes in her level of stress or of exercise. Also, most people experience a small degree of variation in their weight over time, so some of this weight change may be simply due to natural variation. So, there is no guarantee that the treatment was what caused the weight loss. Psychological factors can affect results in these sorts of treatments. In a study reported in Sutherland (1992, p. 98), two groups of overweight women were given bogus treatments to encourage weight loss.

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