A person recorded the speed (in km/hr) of 10 motorists as 48, 52, 57, 55, 45, 39, 61, 49, 51 and 43. The average speed of the motorists is
50 km/hr
The speeds are 48, 52, 57, 55, 45, 39, 61, 49, 51 and 43 (in km/hr)
Sum of the speeds
=48+52+57+55+45+39+61+49+51+43=500
Number of speeds taken into account = 10
∴Average =50010=50 km/hr