Advertisements
Advertisements
Question
Find the median of:
66, 98, 54, 92, 87, 63, 72.
Solution
54, 63, 66, 72, 87, 92, 98
↑
Mid term (median) = 72
APPEARS IN
RELATED QUESTIONS
For a certain frequency distribution, the value of Mean is 101 and Median is 100. Find the value of Mode.
A life insurance agent found the following data for distribution of ages of 100 policy holders. Calculate the median age, if policies are given only to persons having age 18 years onwards but less than 60 years.
Age (in years) | Number of policy holders |
Below 20 | 2 |
20 - 25 | 4 |
25 - 30 | 18 |
30 - 35 | 21 |
35 - 40 | 33 |
40 - 45 | 11 |
45 - 50 | 3 |
50 - 55 | 6 |
55 - 60 | 2 |
The marks obtained by 30 students in a class assignment of 5 marks are given below.
Marks | 0 | 1 | 2 | 3 | 4 | 5 |
No. of Students |
1 | 3 | 6 | 10 | 5 | 5 |
Calculate the mean, median and mode of the above distribution
Following is the distribution of I.Q. of loo students. Find the median I.Q.
I.Q.: | 55 - 64 | 65 - 74 | 75 - 84 | 85 - 94 | 95 - 104 | 105 - 114 | 115 - 124 | 125 - 134 | 135 - 144 |
No of Students: | 1 | 2 | 9 | 22 | 33 | 22 | 8 | 2 | 1 |
If the median of the following data is 32.5, find the missing frequencies.
Class interval: | 0 - 10 | 10 - 20 | 20 - 30 | 30 - 40 | 40 - 50 | 50 - 60 | 60 - 70 | Total |
Frequency: | f1 | 5 | 9 | 12 | f2 | 3 | 2 | 40 |
A survey regarding the height (in cm) of 51 girls of class X of a school was conducted and the following data was obtained:
Height in cm | Number of Girls |
Less than 140 | 4 |
Less than 145 | 11 |
Less than 150 | 29 |
Less than 155 | 40 |
Less than 160 | 46 |
Less than 165 | 51 |
Find the median height.
The weights (in kg) of 10 students of a class are given below:
21, 28.5, 20.5, 24, 25.5, 22, 27.5, 28, 21 and 24.
Find the median of their weights.
Find the median from the following data:
Marks | No of students |
Below 10 | 12 |
Below 20 | 32 |
Below 30 | 57 |
Below 40 | 80 |
Below 50 | 92 |
Below 60 | 116 |
Below 70 | 164 |
Below 80 | 200 |
The following table shows the number of patients of different age groups admitted to a hospital for treatment on a day. Find the median of ages of the patients.
Age- group (Yrs.) | 10-20 | 20-30 | 30-40 | 40-50 | 50-60 | 60-70 |
No. of patients | 40 | 32 | 35 | 45 | 33 | 15 |
What is the value of the median of the data using the graph in the following figure of less than ogive and more than ogive?
Which measure of central tendency can be determine graphically?
If the median of the data: 6, 7, x − 2, x, 17, 20, written in ascending order, is 16. Then x=
In the following table, Σf = 200 and mean = 73. Find the missing frequencies f1, and f2.
x | 0 | 50 | 100 | 150 | 200 | 250 |
f | 46 | f1 | f2 | 25 | 10 | 5 |
Calculate the median of the following distribution:
Weight (in nearest kg.) | No. of students |
46 | 7 |
48 | 5 |
50 | 8 |
52 | 12 |
53 | 10 |
54 | 2 |
55 | 1 |
Obtain the median for the following frequency distribution:
x : | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
f : | 8 | 10 | 11 | 16 | 20 | 25 | 15 | 9 | 6 |
The following are the marks scored by the students in the Summative Assessment exam
Class | 0 − 10 | 10 − 20 | 20 − 30 | 30 − 40 | 40 − 50 | 50 − 60 |
No. of Students | 2 | 7 | 15 | 10 | 11 | 5 |
Calculate the median.
The median of an ungrouped data and the median calculated when the same data is grouped are always the same. Do you think that this is a correct statement? Give reason.
Will the median class and modal class of grouped data always be different? Justify your answer.
The maximum bowling speeds, in km per hour, of 33 players at a cricket coaching centre are given as follows:
Speed (km/h) | 85 – 100 | 100 – 115 | 115 – 130 | 130 – 145 |
Number of players | 11 | 9 | 8 | 5 |
Calculate the median bowling speed.
The median of the following data is 525. Find the values of x and y, if the total frequency is 100.
Class interval | Frequency |
0 – 100 | 2 |
100 – 200 | 5 |
200 – 300 | x |
300 – 400 | 12 |
400 – 500 | 17 |
500 – 600 | 20 |
600 – 700 | y |
700 – 800 | 9 |
800 – 900 | 7 |
900 – 1000 | 4 |