Emily, a teacher, was calculating the test scores of her class, which consisted of 50 students. Initially, she calculated the class average to be 75. However, upon inspection, she discovered that scores 90 and 65 were mistakenly noted as 80 and 60. What is the correct class average (up to one decimal place) after rectifying these mistakes?

The average marks of 50 students in a class was found to be 64 . If the marks of two students were incorrectly entered as 38 and 42 instead of 83 and 24 , respectively, then what is the correct average?

A pupil's marks were wrongly entered as 83 instead of 63. Due to that the average marks for the class got increased by half (1/2). The number of pupils in the class is:

In a class of 40 students, the mean score of the girls is 30, the mean score of the boys is 40, and the mean score of the entire class is 32. If the score of one boy was incorrectly computed as 30 for 40, what is the correct mean score for the entire class?22 Mark For ReviewA) 31B) 31.50C) 32.25D) 36

On a recent quiz about averages, the following information is known:• There were three questions on the quiz.• Each question was worth 1 mark.• Each question was marked either right or wrong (no part marks).• 50% of the students got all 3 questions correct.• 5% of the students got no question correct.• The class average mark was 2.3 out of 3.Determine the percentage of students who got exactly 1 question correct and thepercentage of students who got exactly 2 questions correct.

Select the correct answerThe average of 100 items was found to be 30. If at the time of calculation, two items were wrongly taken as 32 and 12 instead of 23 and 11, then the correct average is?Options29.829.929.529