When l look at thefinance page at the company profiles, it gives two numbers. For example: for Boeing it says: Div & Yield1.60 (3.40%). Which one of these is correct? Thanks in advance.

Both are correct. The first number is the actual dividend annually in dollars (i.e., Boeing pays the owner of Boeing stock $1.60 each year (40 cents quarterly) for each share they own. The second is the yield, which is the $1.60 divided by the closing share price - which means that the day you got these numbers, Boeing was trading at about $47.06.

Yield is basically the same as the interest rate you get on a savings account.

The dividend is expressed in dollars; i.e. 1.60. The yield is the dividend divided by the stock price.$1.60/$47.05 = 3.4%.