Mathematics
The marks of 10 students of a class in an examination arranged in ascending order is as follows:
13, 35, 43, 46, x, x + 4, 55, 61, 71, 80
If the median marks is 48, find the value of x. Hence, find the mode of the given data.
Related Questions
Use graph paper to answer this question:
During a medical checkup of 60 students in a school, weights were recorded as follows:
Weight (in kg) Number of students 28 - 30 2 30 - 32 4 32 - 34 10 34 - 36 13 36 - 38 15 38 - 40 9 40 - 42 5 42 - 44 2 Taking 2 cm = 2 kg along one axis and 2 cm = 10 students along the other axis, draw an ogive. Use your graph to find the:
(i) Median
(ii) Upper quartile
(iii) Number of students whose weight is above 37 kg
Calculate the mean, median and mode of the following numbers:
(i) 17, 19, 11, 23, 19
(ii) 7, 9, 8, 11, 8, 12, 8, 9
(iii) 2, 1, 0, 3, 1, 2, 3, 4, 3, 5
(iv) 8, 10, 7, 6, 10, 11, 6, 13, 10
The following sizes of shoes were sold by a shop on a particular day.
8, 9, 5, 6, 4, 9, 1, 9, 3, 6, 3, 9, 7, 1, 2, 9, 5
Find the modal size of the shoes sold.
The following table shows the weights of 15 students :
Weight (in kg) Number of students 47 4 50 3 53 2 56 2 60 4 Calculate :
(i) mean
(ii) median
(iii) mode