1. Players on a volleyball team measured how high they could jump. The results

are recorded as follows: 17 19 17 21 24 21 22 13 19 20 18 23 24 20

a) Find the mean, median, mode and range. Describe the shape of the distri- bution.

b) Calculate the sample variance and the standard deviation. c) Construct the box-and-whisker plot using the 5-Number Summary. Are there any outlier(s)?

2. An economist is interested in the relationship between annual income and work

experience. She surveys a group of workers and lists the following work expe- rience (measured in years) and annual income (measured in ten-thousands of

dollars):

Work experience, x (years) 1 3 4 6 9 Annual income, y ($10,000) 7 9 10 11 12

a) Find the linear correlation coefficient r for the relationship between annual income and work experience. Describe the relationship. b) Find the equation of the regression line for the relationship between annual income and work experience. c) What is the predicted annual income for someone who has 7 years of work experience?

answer ASAP please