Calculate the five-number summary of the given data. 23, 4, 1, 18, 22, 1, 7, 14, 23, 15, 18, 25, 12, 11, 5 Enter your answers in ascending order, separating each answer with a comma.

Exercise A4 Why is a bar chart the best way illustrate comparisons?

Exercise A3 What dome slices of a pie chart represent?

Savings-Mart (a chain of discount department stores) sells patio and lawn furniture. Sales are seasonal, with higher sales during the spring and summer quarters and lower sales during the fall and winter quarters. The company developed the following quarterly sales forecasting model: Y t=8.25+0.125t2.75D1t+3.50D3t where Y t=predictedsales(million)inquartert 8.25=quarterlysales(million)whent=0 t=timeperiod(quarter)wherethefourthquarterof2002=0,firstquarterof2003=1,secondquarterof2003=2,... D1t={1forfirst-quarterobservations0otherwiseD2t={1forsecond-quarterobservations0otherwiseD3t={1forthird-quarterobservations0otherwise Forecast Savings-Marts sales of patio and lawn furniture for each quarter of 2010.