The average weight of 38 students is 42 kg. It was found later that the figure of 46 kg was misread as 26 kg in one of the readings. What is the correct average? (correct to one decimal places)

42.5 kg 45.5 kg 39 kg 44 kg

42.5 kg

Difference in weight due to wrong entry = 46 - 26 = 20 kg Increment in weight should be = \(\frac{20}{38}\) = 0.526kg Actual Average = 42 + 0.5 = 42.5 kg