What is meant by rms speed of the molecules of a gas? Is rms speed same as the average speed?

Explanation

The rms speed of the molecule of a gas is defined as the square root of the mean of the squared velocities of the molecule of a gas
No, rms speed is different from the average speed.
`V_(rms)=sqrt((V_(1)^(2)+V_(2)^(2)+V_(3)^(2))/(3))`
`barV="Average speed"=(V_(1)+V_(2)+V_(3))/(3)`