The mode is 4 and 9 (if two different numbers appear twice then they are both the mode)
The median is 4 as it is the middle number (put the numbers in order to find this out and cancel each number out from both sides, if there are two numbers left add them both and divide by two)
The mean is 4.3 because if you add them all up and divide by how many there are then you will get 4.285. Round this to one decimal point and 4.3 should be the answer. Mean is another word for average