The spread of numerical value from the mean value is called?
Variability describes how far apart data points lie from each other and the center of a distribution. Along with measures of central tendency, measures of variability give you descriptive statistics that summarize your data.
A man travels some distance at a speed of 20 km/hr and returns at a speed of 15 km/hr. If the total time taken by him is 2 hrs 20 min, the distance is
Distance between two stations P and Q is 350 km. Train A and B leave station P at 7 a.m. with speeds 50 km/h and 25 km/h respectively. Train A reaches t...
Vicky and Vikram start running simultaneously around a rectangular track of length 500m from the same point at speeds of 30 km/hr and 20 km/hr. When wil...
It takes 8 hours less to travel from point 'E' to point 'F' at a speed of 60 km/h than it takes to travel the same distance at 24 km/h. If 30% of the di...
Arjun and Bittu together covered a total distance of 150 km. Arjun travels at a speed of 75 km/hr and Bittu at 25 km/hr. The total time they spent trave...
An Aeroplane flies along a Square field @ 75, 100, 150 and 200 km/hours respectively. Then find the Average speed of the Aeroplane during the whole jour...
If a boy runs at the speed of 20 km/hr and crosses a bridge in 15 minutes, then what is the length of the bridge?
A car travels at the speed of 40 km/hr. for the first half of the journey and at the speed of 60 km/hr for the second half of the journey. What is the a...
If a person walks 25% more than of his usual speed, reaches his distance 90 minutes before. If the destination is 420 km away, then the usual speed of a...
1322 metres long train crosses a man who is moving in the same direction with a certain speed, in 40 seconds. If the same train can cross a tree in 20 s...
