3. • M1=
𝑆𝑄
𝑆𝑂
×AO× 𝑆𝑃
or
ASQ×SP
where ASQ=
𝑆𝑄
𝑆𝑂
×AO
• M2= AQ×AP
• M3= AQ×SP
• M4= RSQ×SP
where RSQ=Total AQ× Ratio of SQ
• AQ= Actual Quantity
• SQ= Standard Quantity
• SP= Standard Price
• AP= Actual Price
• SO= Standard Output
• AO= Actual Output
• ASQ= Actual Standard Quantity
• RSQ= Revised Standard Quantity
4. Labour Cost
Variance
L1-L2
Labour Rate of Pay
Variance
L3-L2
Labour Total
Efficiency Variance
L1-L3
Labour Mix Variance
L4-L3
Idle time Variance
L5-L4
Labour Efficiency
Variance
L1-L5