To find the mean (A), we need to calculate the sum of the given numbers and divide it by the total number of values.
Sum of numbers = 1 + 3 + 2 + 2 + 3 + 4 + 1 + 5 + 10 + 11 + 9 + 8 + 12 + 14 = 85
Total number of values = 14
Mean (A) = Sum of numbers/Total number of values = 85/14 ≈ 6.07
To find the median (B), we need to arrange the numbers in ascending order.
1, 1, 2, 2, 3, 3, 4, 5, 8, 9, 10, 11, 12, 14
Since there are 14 numbers, the median will be the average of the 7th and 8th numbers.
Median (B) = (3 + 4)/2 = 7/2 = 3.5
A - B = 6.07 - 3.5 = 2.57
Therefore, the correct answer is B. 1.57
22. The marks obtained by students in a
mathematics test are given below 1, 3, 2, 2,
3, 4, 1, 5, 10, 11, 9, 8, 12, 14. If A is the
mean and B is the median, then calculate A
− B.
A. 1.68
B. 1.57
C. 2.45
D. 3.58
1 answer