The marks of 7 students in a unit test are given below :
9, 10, 7, 6, 9, 3, 5
Mean of the data is :
Answer & explanation
Correct answer: option 3
Marks given are 9 10 7 6 9 3 5.
Their sum is 9 + 10 + 7 + 6 + 9 + 3 + 5 = 49.
Hence their average/mean = \(\frac{sum}{total\;numbers}\) = \(\frac{49}{7}\) = 7.