Mathematics
The mean of 40 items is 35. Later on, it was discovered that two items were misread as 36 and 29 instead of 63 and 22. Find the correct mean.
Related Questions
If the mean of the five observations x + 1, x + 3, x + 5, 2x + 2, 3x + 3 is 14, find the mean of first three observations.
The mean height of 36 students of a class is 150.5 cm. Later on, it was detected that the height of one student was wrongly copied as 165 cm instead of 156 cm. Find the correct mean height.
The following observations have been arranged in ascending order. If the median of the data is 63, find the value of x.
29, 32, 48, 50, x, x + 2, 72, 75, 87, 91.
Draw a histogram showing marks obtained by the students of a school in a Mathematics paper carrying 60 marks.
Marks Students 0 - 10 4 10 - 20 5 20 - 30 10 30 - 40 8 40 - 50 30 50 - 60 40