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Question

1.RTT Deviation =$RTT_{D}$=(1-$RTT_{D\beta }$) old $RTT_{D}$ + $RTT_{D\beta }$ * | ($RTT_{S}$ -$RTT_{M}$)|

2.RTT Deviation =$RTT_{D}$=(1-$RTT_{D\beta }$) old $RTT_{D}$ + $RTT_{D\beta }$ * | ($RTT_{M}$)|

Which of the following is right formula for calculation and in what conditions ?I found bot formula right in sone numericals?

Answer 1

ND(Next Deviation) = $\alpha$ * ID (Initial Deviation) + (1-$\alpha$)*AD (Actual Deviation) [ | IRTT(Initial RTT) -ARTT(Actual RTT) | ]

Comments

can u explain what is 

• ND(Next Deviation)
•  ID (Initial Deviation)
• AD (Actual Deviation)
• IRTT(Initial RTT)
• ARTT(Actual RTT) 

i know only RTT  what is deviation