Related Questions
Calculate the mean of the distribution, given below, using the short cut method :
Marks No. of students 11 - 20 2 21 - 30 6 31 - 40 10 41 - 50 12 51 - 60 9 61 - 70 7 71 - 80 4 The median of 18, 29, 15, 14 and 21 is :
15
18
29
21
Numbers 5, 15, 20, x, 28, 30, 35 are in ascending order and have median = 23; then the value of x is :
24
29
17.5
23
For numbers 10, 20, 30, 40, 50, 60, 70 and 80; the inter-quartile range is :
20 + 60
60 - 30
60 - 20
50 - 10