1. What is meant by the property of the shape of a distribution of data?

2. If the mode of a data set is smaller than the median, which in turn is smaller than the mean, the distribution of data is __________ skewed.

3. Sketch a box-and-whisker plot for each of the following distributions of data:

a) symmetric distribution,

b) negatively skewed,

c) positively skewed.

4. Should the empirical rule be used for data sets that are highly skewed? Explain.