normal and skewed distributions

Question 1

normal distribution

Answer 1

• data will produce a symmetrical bell-shaped curve when plotted
• most scores are close to the mean, with fewer being at the extreme ends of the distribution
• the median and mode occupy the same centre point of the curve as the mean

Question 2

skewed distribution

Answer 2

positively skewed = most scores fall below the mean (the graph is highest on the left)

negatively skewed = most scores fall before the mean (the graph is highest on the right)

• in both cases, the mode is the highest point on the graph