A newly graduated college student went to the talent market to look for a job. He saw the recruitment information of a company, and the average monthly salary of employees was RMB.

(1) The average monthly salary of our employees is:

( 15000× 1+ 12000×3+ 10000× 10+2000× 105+ 1000×2)÷( 1+3+ 10+ 105+2)

= 3,000 yuan;

Therefore, the average monthly salary of employees mentioned in the recruitment materials is true.

(2) Statistics reflecting the concentration trend of employees' monthly salary, with a median of 2,000 yuan; The crowd is 2000 yuan.

(3) For this college student, the statistic that best reflects the concentration trend of employees' monthly salary in our company is "mode".

Because most of them reflect the monthly salary level of most employees.