Consider the following frequency distribution:

x     f

8     6

5     4

6     5

10    8

9     9

4     6

7     4

What is the median for the distribution?

The mean of 12 observations is 15. One more observation is included and the new mean becomes 16. The 13th observation is

There was a group of 6 students who took a test. Another student joined the group after taking the test later. With her marks included the average score of the group went up by 3. This student has got ___ marks more than the average marks without her being included.

Among four bags, average weight of last three bags is 18 kg and the average weight of first three bags is 19 kg. If the weight of last bag is 22 kg, then what is the weight (in kg) of first bag?

The average of three numbers is 6. The average of the first two is 5 while the average of the last two is 8. The three numbers are:

The mean score in a test of the 10 boys in a class was 15 while the overall mean of the 25 students in the class was 16.2. What was the mean score of the girls?

Samit was given some money to take care of his travel during a 6-day sales drive he had to undertake. However, he had to increase his stay by another 4 days and as a result his average daily travel allowance went down by Rs. 56. What was the amount that was sanctioned to him in the beginning?

Find the median, mode and mean of 9, 5, 8, 9, 9, 7, 8, 9, 8.

Given below are the ages in yrs of a group of children. What is the medium age?

7, 9, 8, 6 , 5, 3, 9, 2