skewed distributions

• the distribution of the scores is asymmetric, most scores are on one side, with long skews on the opposite side of the majority of the scores
• positive skew- more scores at lower end of graph, outliers at the high end,
• negative skew- more scores at higher end of graph, outliers at the lower end
• the mean average is effected by extreme scores so is shifted towards them (the outliers)
• the median- the point where 50% of the graph is either side (between mode and mean)
• mode- as the mode is the most frequent score, it remains at the highest point