descriptive statistics

• -          A disadvantage of the mode is that it can be affected dramatically by the change in one score which makes it representative and is used normally with nominal data
• -          A advantage of the mode is that is that it is unaffected by extreme scores
• -          The mode is the most frequently occurring score
• -           a disadvantage of the medium is that it only takes into account one or two scores which are the middle values – which is generally used with ordinal data
• -          a advantage of the medium is that it is unaffected by extreme scores so more appropriate measures when there are extreme scores
• -          medium – is the middle score of a set of data
• -          a disadvantage of the mean is that it can be distorted by extreme scores and then becomes representative of the data set – also assumes interval level data
• -          an advantage of the mean is the most sensitive and representative measure of central tendency as it takes all the scores into account
• -          there are 3 measures of central tendency = the mean , the mode and the median
• -          when identifying the central tendency in a set of data it tells the research where the middle or centre of a set of data is located
• -          a measure of central tendency provides a single value which is representative of a set of numbers by implicating most typical value