Based on the data given in the following table find the arithmetic mean of the marks obtained out of 10 in a class test by the students of a class.

5.2

⇒ Total frequency = 3 + 2 + 2 + 4 + 6 + 7 + 7 + 5 + 3 + 4 + 2 = 45

⇒ Arithmetic mean = \(\frac{ 0 × 3 + 1×2+2×2+3×4+4×6+5×7+6×7+7×5+8×3+9×4+10×2 }{45}\) 

= \(\frac{234 }{45}\) = 5.2