Refer to Exercise 23. Suppose each teacher receives a 5% raise instead of a $1000 raise. What effect will this raise have on each of the following characteristics of the resulting salary distribution?

a. Shape

b. Median

c. Interquartile range (IQR)

Exercise 23.

A school system employs teachers at salaries between $38,000 and $70,000. The teachers’ union and school board are negotiating the form of next year’s increase in the salary schedule. Suppose that every teacher is given a $1000 raise. What effect will this raise have on each of the following characteristics of the resulting distribution of salary?