Question
Find the median of the following observations: 7, 8,
5, 4, 6, 10, 9, 12, 11, 13Solution
Ascending order of observations: 4, 5, 6, 7, 8, 9, 10, 11, 12, 13
Number of observations = 10 (even number).
Median formula for even observations:
Median = [(n/2)th term + (n/2 + 1)th term] / 2
For n = 10, the 5th and 6th terms are 8 and 9.
Median = (8 + 9) / 2 = 8.5
In a 550-metre race, βAβ beats βBβ by 12 seconds or 60 metres. Find the time taken by βBβ to finish the race.
- A cyclist covered a distance in two parts: first 1.5 hours at 32 km/h and then 2.5 hours at 48 km/h. What was the average speed for the complete journey?
βEβ and βFβ started moving towards each other at the same time with a speed of 30 km/hr and 25 km/hr, respectively. If the distance covered by οΏ½...
- How far will 'Puneet' travel by the time he catches up to 'Bittu', given that 'Puneet' starts 90 km behind and moves at 45 km/h while 'Bittu' moves at 30 k...
Pranav went to the bank at the speed of 60 km/h while returning for his home he covered the half of the distance at the speed of 10 km/h, but suddenly h...
A man travelled a total distance of 300 km. He travelled first 100 km on car with a speed of 20 km/h and rest of the distance on bike whose speed is 10 ...
- Sita takes 6 hours to walk from village 'D' to village 'E' at a speed of 5 km/h. Then she increases her speed by 60% and takes 2 hours to reach village 'F'...
A was travelling from point X to point Y. He increased his speed by 20 km/h after every hour. He reached his destination in 14 hours. If his initial spe...
A train crosses a pole in 12 sec, and a bridge of length 170 m in 36 sec. Then the speed of the train is:
If a person walks 25% more than of his usual speed, reaches his distance 90 minutes before. If the destination is 495 km away, then the usual speed of a...
Relevant for Exams:
