The correlation coefficient of the following sample data of four (X, Y) pairs: (1, 5 ), (2, 10 ), (4, 7 ), and (5, 9 ) equals:

Print/published documents usually include an index unless the document is ______________

a. older than a year b. short c. overly complex d. written collaboratively

Maxx has 45% of the sports shoe market in China, and Seaw Shoes follows closely with 38%

Nekki Run has 12.4 % of the market, Glow has 1.3%, and other assorted brands make up the rest. If Glow manufactures sports shoes specially made for diabetics, who make up about 5% of the population, then it is a ________ in the sports shoe market. A) market leader B) market challenger C) market follower D) market niche firm