distributions

Question 1

describe a normal distribution (3)

Answer 1

● a symmetrical, bell shaped curve

● most items are in the middle area with very few at extreme ends

● the mean, median and mode all occupy the same midpoint of the curve

Question 2

describe and draw a negative skew (2)

Answer 2

● most of the distribution is towards the right of the graph

● resulting in a long tail on the left

● mean is on the left and mode is on the right

Question 3

describe and draw a positive skew

Answer 3

● most of the distribution is towards the left of the graph

● resulting in a long tail on the right

● mean is on the right and mode is on the left